toilet

• n.

• トイレ、屋内便所、化粧室

WordNet

1. a plumbing fixture for defecation and urination (同)can, commode, crapper, pot, potty, stool, throne
2. a room or building equipped with one or more toilets (同)lavatory, lav, can, john, privy, bathroom
3. the act of dressing and preparing yourself; "he made his morning toilet and went to breakfast" (同)toilette
4. artifacts used in making your toilet (washing and taking care of your body) (同)toilet articles
5. a fine powder for spreading on the body (as after bathing) (同)bath powder, dusting_powder
6. a perfumed liquid lighter than cologne (同)eau de toilette
7. soap used as a toiletry (同)face soap, bath soap
8. the hinged seat on a toilet

PrepTutorEJDIC

1. 〈C〉(水洗式の)『便器』 / 〈C〉(水洗式便器のある)洗面所,化粧室,浴室;トイレ,便所（アメリカでは「restroom」とか「bathroom」と言い換えた呼び方が普通）〈U〉〈C〉化粧,身じたく / 〈U〉〈C〉《文》服装,衣装
2. 化粧品(オーデコロン・石けんなど)
3. 『骨折って(精を出して)働く』,(…を)精を出してする《+at+名(doing)》 / 骨折って進む《+along(on,over,through,up)+名》 / 『骨折り仕事』,苦労(類語)
4. 仕掛けた網,わな

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/10/20 23:48:22」(JST)

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This article is about a sanitation fixture used primarily for the disposal of human excrement and urine. For a room containing a toilet, see toilet (room). For other uses, see toilet (disambiguation).

Flush toilet in a bathroom with common accessories including toilet paper in a dispenser and a toilet brush in its holder

A toilet is a sanitation fixture used primarily for the disposal of human excrement and urine, often found in a small room referred to as a toilet/bathroom/lavatory. Flush toilets, which are common in many parts of the world, may be connected to a nearby septic tank or more commonly in urban areas via "large" (3–6 in or 7.6–15 cm) sewer pipe connected to a sewerage pipe system. The water and waste from many different sources is piped in large pipes to a more distant sewage treatment plant. Chemical toilets are used in mobile and many temporary situations where there is no access to sewerage, dry toilets, including pit toilets and composting toilet require no or little water with excreta being removed manually or composted in situ.

Ancient civilizations used toilets attached to simple flowing water sewage systems included those of the Indus Valley Civilization, e.g., Harappa and Mohenjo-daro which are located in present day India and Pakistan and also the Romans and Egyptians. Although a precursor to the modern flush toilet system was designed in 1596 by John Harington, such systems did not come into widespread use until the late nineteenth century. Thomas Crapper was one of the early maker of toilets in England.

Diseases, including cholera which still affects some 3 million people each year, can be largely prevented when effective sanitation and water treatment prevents fecal matter from contaminating waterways, groundwater and drinking water supplies. Infected water supplies can be treated to make the water safe for consumption and use. There have been five main cholera outbreaks and pandemics since 1825, during one of which 10,000 people died in 1849 in London alone. The physician John Snow proved that deaths were being caused by people drinking water from a source that had been contaminated by a nearby cesspit which was used by people who were infected with cholera. The London sewer system of the time had not reached crowded Soho and many houses had cellars (basements) with overflowing cesspools underneath their floorboards.

According to The Global Water Supply and Sanitation Assessment 2000 by the World Health Organization, 40% of the global population does not have access to "good" 'excreta disposal facilities'--they live mostly in Asia and Africa. There are efforts being made to design simple effective squat toilets for these people. Usually, they are made by digging a hole, then installing a premade plastic squat toilet seat atop this hole, covering the walls with canvas.

History

Further information: History of sanitation

Ancient civilizations

Green glazed toilet with pigsty model. See Pig toilet. China, Eastern Han dynasty 25 - 220 A.D.

Stone toilet found in 8th century BCE house in the City of David, Jerusalem

According to Teresi et al. (2002):

Roman public toilets, Ostia Antica

The third millennium B.C. was the "Age of Cleanliness." Toilets and sewers were invented in several parts of the world, and Mohenjo-Daro circa 2800 B.C. had some of the most advanced, with lavatories built into the outer walls of houses. These were primitive "Western-style" toilets made from bricks with wooden seats on top. They had vertical chutes, through which waste fell into street drains or cesspits. Sir Mortimer Wheeler, the director general of archaeology in India from 1944 to 1948, wrote, "The high quality of the sanitary arrangements could well be envied in many parts of the world today."

The toilets at Mohenjo-Daro, built about 2600 B.C. and described above, were only used by the affluent classes. Most people would have squatted over old pots set into the ground or used open pits. The people of the Harappan civilization in Pakistan and north-western India had primitive water-cleaning toilets that used flowing water in each house that were linked with drains covered with burnt clay bricks. The flowing water removed the human wastes.

Early toilets that used flowing water to remove the waste are also found at Skara Brae in Orkney, Scotland, which was occupied from about 3100 B.C. until 2500 B.C. Some of the houses there have a drain running directly beneath them, and some of these had a cubicle over the drain. Around the 18th century B.C., toilets started to appear in Minoan Crete; Egypt in the time of the Pharaohs and ancient Persia. In Roman civilization, toilets using flowing water were sometimes part of public bath houses.

In 2012, archaeologists founded what is believed to be Southeast Asia's earliest latrine during the excavation of a neolithic village in the Rạch Núi archaeological site, Southern Viet Nam. The toilet, dating back 1500 B.C., yielded important clues about early Southeast Asian society. More than 30 preserved feces from humans and dogs containing fish and shattered animal bones from the site provided a wealth of information on both the diet of humans and dogs at Rạch Núi, but also on the types of parasites each had to contend with.

Roman toilets, like the ones pictured here, are commonly thought to have been used in the sitting position. But sitting toilets only came into general use in the mid-19th century in the Western world. The Roman toilets were probably elevated to raise them above open sewers which were periodically "flushed" with flowing water, rather than elevated for sitting. The Romans weren't the first civilisation to adopt a sewer system - The Indus Valley civilisation had a rudimentary network of sewers built under grid pattern streets and it was the most advanced seen so far. Squat toilets (also known as an Arabic, French, Chinese, Japanese, Korean, Iranian, Indian, Turkish or Natural-Position toilet) is a toilet used by squatting, rather than sitting and are still used by the majority of the world's population. There are several types of squat toilets, but they all consist essentially of a hole in the ground or floor with various provisions for human waste.

Early Modern Europe

Bourdaloue chamber pots from the Austrian Imperial household.

Chamber pots were in common use in Europe from ancient times, even being taken to the Middle East by Christian pilgrims during the Middle Ages. By the Early Modern era, chamber pots were frequently made of china or copper and could include elaborate decoration. They were emptied into the gutter of the street nearest to the home. During the Victorian era, British housemaids emptied household chamber pots into a "slop sink" that was inside a housemaid's cupboard on the upper floor of the house. The housemaids' cupboard also contained a separate sink for washing the "bedroom ware", made of wood with a lead lining to prevent chipping china chamber pots. Once indoor running water was built into British houses, servants were sometimes given their own lavatory downstairs, separate from the family lavatory.

By the 16th century, cesspits and cesspools were increasingly dug into the ground near houses in Europe as a means of collecting waste, as urban populations grew and street gutters became blocked with the larger volume of human waste. Rain was no longer sufficient to wash away waste from the gutters. A pipe connected the latrine to the cesspool, and sometimes a small amount of water washed waste through the pipe into the cesspool. Cesspools would be cleaned out by tradesmen, who pumped out liquid waste, then shovelled out the solid waste and collected it in horse-drawn carts during the night. This solid waste would be used as fertilizer. The perception that human waste had value as fertilizer, and in ammonia production, delayed the construction of a modern sewer system in Paris as a replacement for the city's cesspool system. In the early 19th century, public officials and public hygiene experts studied and debated the matter at length, for several decades. The construction of an underground network of pipes to carry away solid and liquid waste was only begun in the 1880s, gradually replacing the cesspool system, although cesspools were still in use in some parts of Paris into the 20th century. The growth of indoor plumbing, toilets and bathtubs with running water came at the same time.

America

Outhouse. Hidden Lake and Round Valley hike, Palm Springs.

American lavatories followed the pattern of constructing cesspools in urban areas, using the practise already established in Europe, although the use of the outhouse near the family home was also common where more land was available, and keeping the waste well away from the well water was not a challenge. A textbook of architecture from 1903 indicates that cesspool construction was ideally done with 20-inch thick quarried stone, with cement mortar, and 6 feet deep. The chain-pull indoor toilet, invented in England in the 1880s, was soon introduced to America, in the homes of the wealthy and in hotels. Flush toilets were introduced in the 1890s. Public awareness of germ theories about disease, as well as inexpensive manufacturing methods, helped the flushing toilet to spread to middle class and even working class households. Important American inventors who contributed to the development of the toilet during the early 1900s included William Elvis Sloan (1867-1961), of Chicago, Illinois, and Philip Haas (1875-1927), of Dayton, Ohio. Sloan introduced the 'Flushometer' and was responsible for several flush valve designs. Haas obtained numerous patents for flush valves, flushing systems, and water closet designs. Indoor plumbing, including flushing toilets, was common in American households by the 1920s. Edward and Clarence Scott began selling white perforated toilet tissue during this era, bringing additional convenience to the American public, who had until then relied on rough paper for toilet use.

Flush toilets

Flush toilet operation

Further information: Flush toilet

Flush toilet bowl

Flush toilet

A typical flush toilet is a vitreous, ceramic bowl containing water plus special plumbing made to be rapidly filled with more water. The water in the toilet bowl is connected to a hollow drain pipe shaped like an upside down U connecting the drain. One side of the U channel is arranged as a hollow siphon tube longer than the water in the bowl is high. The siphon tube connects to the drain. The bottom of the upside down U-shaped drain pipe limits the height of the water in the bowl before it flows down the drain. If water is poured slowly into the toilet bowl it simply flows over the bottom of the upside down U and pours slowly down the drain—the toilet does not flush. The water in the bowl both acts as a barrier to sewer gas entering and as a receptacle for waste. Sewer gas is vented through a vent pipe attached to the sewer line.

When a user flushes a toilet, a valve opens, and allows the toilet tank's water to quickly enter the toilet bowl. This rapid influx of water into the toilet bowl from the tank causes the swirling water in the bowl to rapidly rise and fill the upside down U-shaped drain and the siphon tube mounted in the back of the toilet. This full siphon tube starts the toilet's siphon action. The siphon action rapidly (4–7 seconds) “pulls” nearly all of the water and waste in the bowl and the on-rushing tank water down the drain—it flushes. When most of the water has drained out of the bowl, the continuous column of water up and over the bottom of the upside-down U-shaped drain pipe (the siphon) is broken when air enters the siphon tube. The toilet then gives its characteristic gurgle as the siphon action ceases and no more water flows out of the toilet. After flushing, the flapper valve in the water tank closes, and various water lines and valves connected to the household water supply refill the toilet tank and bowl. The toilet is again ready for use.

At the top of the toilet bowl is a rim built into the toilet with many slanted drain holes connected to the toilet tank to fill, rinse and induce swirling in the toilet bowl when it is flushed. Mounted above the toilet is a large holding tank with about (now) 1.6 to 1.2 US gallons (6.1 to 4.5 L) of water. This tank is built with a large drain 2.0 to 3.0 inches (5.08 to 7.62 cm) diameter hole at its bottom covered by a flapper valve that allows the water to rapidly leave the holding tank. The toilet's plumbing is built to allow entry of the toilet tank’s water into the toilet in a very short period of time. This water pours through the holes in the rim and a siphon jet hole about 1.0 inch (2.54 cm) diameter in the bottom of the toilet. Other toilets use a large hole in the front of the rim to allow rapid filling of the toilet bowl.

Flush toilet manufacture

A toilet with an elevated cistern of water and a chain attached to the tank to release the water and flush the waste away through the plumbing. This system was invented in England in the 1880s.

A two-piece attaching seat and toilet bowl lid are typically mounted over the toilet bowl, to allow covering the toilet when it is not in use, and to provide seating comfort while using the toilet.

A toilet's body is made from vitreous china, which starts out as a thin clay mixture called a slip. It takes about 20 kilograms (44 lb) of slip per toilet.

This slip is poured into the space between Plaster of Paris moulds. Toilet bowl, toilet rim, toilet tank and toilet tank lid all require separate moulds. The moulds are assembled and set up for filling and the slip-filled moulds sit for about an hour after filling while the Plaster of Paris moulds absorb moisture from the slip making it semisolid next to the mould but staying liquid further from the surface of the moulds. Then, the workers remove plugs that allow any excess liquid slip from the centers of the mod to pour from the mould—this excess slip is recycled for later use. This drained-out slip leaves voids inside the fixture using less material, keeping it both lighter and easier to fire in a kiln, and it allows the formation of intricate waste lines in the fixture—the drain's centers are poured out as slip. At this point, the toilet parts without their moulds look like and are about as strong as soft clay. After about one hour the top core mould (interior of toilet) is removed. The rim mould bottom, which includes a place to mount the holding tank is removed, and it has the appropriate slanted holes for the rinsing jets cut and the mounting holes for tank and seat are punched into the rim piece. Large flapper valve holes for rapid water entry into the toilet are cut into the rim pieces. The exposed top of the bowl piece is then covered with a thick slip and the still uncured rim piece is attached on top of the bowl piece. The bowl and hollow rim are now a single piece. The bowl plus rim is then inverted and the toilet bowl is set upside down on the top rim mould to hold the pieces together as they dry. Later all the rest of the mould pieces are removed. As the clay dries further it hardens more and continues to shrink. After a few hours the casting is self-supporting, and is called greenware. After the moulds are removed workers use hand tools and sponges to smooth the edges and surface of the greenware and remove the mould joints or roughness: this is called fettling. For large scale production pieces these steps may be automated. The parts are then left outside or put in a warm dry room to dry before going through a dryer at about 93°C (200°F), for about 20–36 hours.

After finishing the surfaces, the bowls and tanks are sprayed with glaze of various kinds to get different colors. This glaze is designed to shrink and contract at the same rate as the greenware while undergoing firing. After being sprayed with glaze the toilet bowls, tanks, and lids are placed in stacks on a conveyor belt or "car" that slowly goes through a large kiln to be fired. The belt slowly moves the glaze covered greenware into a tunnel kiln, which has different temperature zones inside it starting at about 200°C (400°F) at the front, increasing towards the middle to over 1,200°C (2,200°F) degrees and exiting around out 90°C (200°F). During the firing in the kiln, the greenware and glaze are vitrified as one solid finished unit. Transiting the kiln takes glaze covered greenware around 23–40 hours.

When the pieces are removed from the kiln and fully cooled, they are ready for inspection for cracks. After inspection, the flushing mechanism may be installed on a one piece toilet. On a two piece toilet with a separate tank the flushing mechanism may only be put on the tank with final assembly waiting installation. The seat too may be installed at this time, or the parts may be sold separately and assembled by a plumbing distributor.

Water usage

Various forms of flush toilets have become widely used in modern times The amount of water used by modern toilets is a significant portion of personal water usage, totaling as much as about 90 litres (24 US gal) of water per capita per day.

The bowl drain water-way is at the rear of the bowl and is connected to the waste pipe.

When a toilet is flushed, the water leads into sewage and eventually ends in a water treatment plant. Here the water is cleaned and removed of unhealthy parts, sanitized and re-used.

Modern low flush toilet designs allow the use of much less water per flush--1.6 to 1.2 US gallons (6.1 to 4.5 L) per flush—but may require the sewage treatment system be modified for the more concentrated waste. Dual flush toilet allow the use to select between a flush for urine or feces saving a significant amount of water over conventional units. You push the flush handle up for one kind of flush and down for the other. In some places users are encouraged not to flush after urination. Flush toilets, if plumbed for it, may also use greywater (water previously used for washing dishes, laundry and bathing) for flushing rather than potable water (drinking water). Some modern toilets pressurize the water in the tank which initiates flushing action with less water usage. Heads (on ships) are typically flushed with seawater.

Other toilet types

Pit toilets

Main article: Pit toilet

Pit toilets

A pit toilet is a dry toilet system which collects human excrement and urine in a large container or trench and ranges from a simple slit trench dug in the ground to more elaborate systems with seating and ventilation systems. They are more often used in emergency, rural and wilderness areas as well as in much of the developing world. The waste pit or trench, in some cases, will be large enough that the reduction in mass of the contained waste products by the ongoing process of decomposition allows the pit to be used more or less permanently. In other cases, when the pit becomes too full, it may be emptied or the hole covered with dirt. Pit toilets have to be located away from drinking water sources (wells, streams, etc.) to minimize the possibility of disease spread. Army units typically use a form of pit toilet when they are in the field and away from functional sewerage systems. The use of correctly located pit toilets were found to prevent much of the spread of various diseases which used to kill many more soldiers than the bullets and artillery used in pre-1940 warfare.

Dry Toilets

Outhouses are still in use to a limited extent in rural areas, Herøy in Norway.

Dry toilets, which use very limited or no water for flushing include the pit toilet (a simple hole in the ground, or one with ventilation, fly guards and other improvements) and composting toilet (which mix excrement with carbon rich materials for faster decomposition), incinerating toilet (which burn the excrement), the Tree bog (a simple system for converting excrement as direct fertiliser for trees. The pig toilet from the Indian state of Goa which consist of an outhouse linked to a pig enclosure by a chute is still in use to a limited extent but the subsequent use of the pigs for food carries a significant risk for human health. The unsanitary 'flying toilet' used in African slums where plastic shopping bags are first used as a container for excrement and are then thrown as far away as possible." This practice has led to the banning of the manufacture and import of such bags in Uganda, Kenya, and Tanzania. A toilet that pays its users has been opened in Musiri, Tamil Nadu, India. It is the first of its kind. The feces it receives are composted, and the urine is used as fertilzer for bananas and other food crops. Users are paid up to 12 U.S. cents a month. Before the introduction of modern flush toilets it was common for people to use a chamber pot at night and then to dispose of the 'nightsoil' in the morning; this practice (known as slopping out) continued in prisons in the United Kingdom until recently and is still in use in the Republic of Ireland. The garderobe was used in medieval times and then the privy midden and pail closet in early industrial Europe.

UD Toilet, UDD Toilet, and UDDT System

These toilets have two compartments. One for urine diversion and one for the feces. A urine diversion toilet, UD toilet or UDT, flushes one or both compartments with water. A urine diversion dry toilet, UDD toilet, or UDDT is more similar to a dry toilet. The term UDDT can also refer to a system incorporating a UD or UDD toilet to recover water or utilize wastes as a fertilizer or biofuel. Astronauts use a UDDT to recover potable water in the space station.

Chemical Toilets

Chemical toilets which do not require a connection to a water supply are used in a variety of situations. Examples include passenger train toilets and airplane toilets and also complicated space toilets for use in zero-gravity spacecraft.

Public toilets

Public Urinal in Limbourg, Belgium.

A public toilet, frequently called a restroom, is accessible to the general public. It may be within a building that, while privately owned, allows public access. Access to a public toilet may require a fee, (pay toilet), or may be limited to business's customers.

Depending on culture, there may be varying degrees of separation between men and women and different levels of privacy. Typically, the entire room, or a stall or cubicle containing a toilet is lockable. Urinals, if present in a men's toilet, are typically mounted on wall with or without a divider between them. In the most basic form, a public toilet may be not much more than an open latrine. Another form is a street urinal known as a Pissoirs after the French term (see Urinal).

In more luxurious variations there may be an attendant, towels, showers, etc. A fairly common feature in more modern toilets is an area to change baby diapers.

A charge levied in the UK during the mid-20th century was one British penny, hence the generally adopted term "spend a penny" meaning to use the toilet.

Portable Toilets

A bucket toilet.

A line of portable toilets.

The portable toilet is used on construction sites and at large outdoor gatherings where there are no other facilities. They are typically self-contained units that are made to be easily moved to different locations as needed. Most portable toilets are unisex single units with privacy ensured by a simple lock on the door. The units are usually light weight and easily transported by a flatbed truck and loaded and unloaded by a small forklift. Many portable toilets are small moulded plastic or fiberglass portable rooms with a lockable door and a receptacle to catch waste in a chemically treated container. If used for an extended period of time they have to be cleaned out and new chemicals put in the waste receptacle. For servicing multiple portable toilets tanker trucks, often called "Honey Trucks", are equipped with lage vacuums to evacuate the waste and replace the chemicals.

High-tech Toilets

'High-tech' toilets include features such as: automatic-flushing mechanisms that flush a toilet or urinal when finished; water jets, or "bottom washers" like a bidet; blow dryers; artificial flush sounds to mask noises; and urine and stool analysis for medical monitoring. Matsushita's "Smart Toilet" checks blood pressure, temperature, and blood sugar. Some feature automatic lid operation, heated seats, deodorizing fans or automated paper toilet-seat-cover replacers. Interactive urinals have been developed in several countries, allowing users to play video games as with the 'Toylet', produced by Sega, that uses pressure sensors to detect the flow of urine and translates it into on-screen action.

Floating Toilet

A floating toilet is essentially an outhouse built on a platform built above or floating on the water. Instead of wastes going into the ground they are collected in a tank or barrel. To reduce the amount of waste that needs to hauled to shore, many use urine diversion. It was developed for residents without quick access to land or connection to a sewer systems. It is also used in areas subjected to prolonged flooding. The need for this type of toilet is high in areas like Cambodia where the World Bank cited in 2008 that nearly 10,000 people died as a result of poor sanitation.

Chamber pot

Main article: Chamber pot

A chamber pot is a receptacle in which one would excrete waste in a ceramic or metal pot. Among Romans and Greeks, chamber pots were brought to meals and drinking sessions. Johan J. Mattelaer said, “Plinius has described how there were large receptacles in the streets of cities such as Rome and Pompeii into which chamber pots of urine were emptied. The urine was then collected by fullers.” This method was used for hundreds of years; shapes, sizes, and decorative variations changed throughout the centuries. This method is no longer used in developed countries, with the exception of hospital bedpans.

Garderobe

Main article: Garderobe

Garderobes were toilets used in the Middle Ages most commonly found in upper-class dwellings. Essentially, they were pieces of wood or stone connecting from one wall to the other with one or more holes to sit on. These would go into pipes that would lead outside the castle or manor. Garderobes would be placed in areas away from bedrooms to shun the smell and also near kitchens or fireplaces to keep the area warm.

• Garderobe at Örebro castle, Sweden.

• Garderobe.

• Garderobe.

• Garderobe at Hülsede Water Castle

• Garderobe at Posterstein castle

• Garderobe at Campen castle

Urinal

Main article: Urinal

Although it is possible for the urinal to be used by females, it was originally constructed for males. It was designed primarily for the disposal of urine and not solid objects. It is meant to be used in a standing position for the convenience of male users and also has no door, stall, and takes less space. These receptacles are most commonly found in public places but can occasionally be found in a private home

• A single urinal

• A stainless steel trough-style urinal

• Dutch public urinal, in Hague.

• Men's room at Oslo Opera house

• 38th floor Men's Room, in Japan, JR Tower.

Squat toilet

Main article: squat toilet

The squat toilet (also called “squatter” or “squatty-potty”) consists of a hole in the ground. However, common modern versions flush like a modern seated toilet, and are not to be compared to a contemporary portable toilet with no plumbing. To use this toilet, one is in a squatting position rather than sitting, by placing one foot on each side of the toilet and squatting over it. Modern versions are in separate stalls when they are in public lavatories, and include toilet tissue rolls for the user's convenience. The squatting method is accompanied by advantages as well health benefits that connect to easiness of procedures such as child birth. The squat toilet is most commonly found in Asia, Africa, and the Middle East but can also occasionally be found in some European (Romania), Mediterranean, and South American countries.

• Squat toilet as seen in some parts of Europe and Asia.

• Squat toilet in Rome, Italy.

• Squat toilet in Topkapi palace, Istamboul, Turkey.

• Squat toilet in Topkapi palace.

• Squat toilet made of porcelain, with water tank for flushing. Taken in the city of Wuhan, China

• An old-style squat toilet. Found in Hong Kong.

Etymology

La Toilette from Hogarth's Marriage à la Mode series, 1743. A young countess receives her lover, tradesmen, hangers-on, and an Italian tenor as she finishes her toilette

Portable potty on top of a mountain in China

Toilet

The word toilet came to be used in English along with other French fashions. It originally referred to the toile, French for "cloth", draped over a lady or gentleman's shoulders while their hair was being dressed, and then (in both French and English) by extension to the various elements, and also the whole complex of operations of hairdressing and body care that centered at a dressing table, also covered by a cloth, on which stood a mirror and various brushes and containers for powder and make-up: this ensemble was also a toilette, as also was the period spent at the table, during which close friends or tradesmen were often received. The English poet Alexander Pope in The Rape of the Lock (1717) described the intricacies of a lady's preparation: The word toilet may also be used, especially in British English to describe the room containing the fixture, for which euphemisms such as restroom or bathroom are used in American English. Prior to the introduction of modern flush toilets, most human waste disposal was done through the use of household chamber pots, or took place outdoors in outhouses or latrines. Pail closets were introduced in England and France in an attempt to reduce sewage problems in rapidly expanding cities.

“

And now, unveil'd, the toilet stands display'd Each silver vase in mystic order laid.

”

These various senses are first recorded by the OED in rapid sequence in the later 17th century: the set of "articles required or used in dressing" 1662, the "action or process of dressing" 1681, the cloth on the table 1682, the cloth round the shoulders 1684, the table itself 1695, and the "reception of visitors by a lady during the concluding stages of her toilet" 1703 (also known as a "toilet-call"), but in the sense of a special room the earliest use is 1819, and this does not seem to include a lavatory.

Through the 18th century, everywhere in the English-speaking world, these various uses centred around a lady's draped dressing-table remained dominant. In the 19th century, apparently first in the United States, the word was adapted as a genteel euphemism for the room and the object as we know them now, perhaps following the French usage cabinet de toilette, much as powder-room may be coyly used today, and this has been linked to the introduction of public toilets, for example on railway trains, which required a plaque on the door. The original usages have become obsolete, and the table has become a dressing-table.

Vestiges of the original meaning continue to be reflected in terms such as toiletries, eau de toilette and toiletry bag (to carry flannels, soaps, etc.). This seemingly contradictory terminology has served as the basis for various parodies e.g. Cosmopolitan magazine ("If it doesn't say 'eau de toilette' on the label, it most likely doesn't come from the famed region of Eau de Toilette in France and might not even come from toilets at all.")

The word toilet itself may be considered an impolite word in Anglophone North America, while elsewhere the word is used without any embarrassment. The choice of the word used instead of toilet is highly variable, not just by regional dialect but also, at least in Britain, by class connotations. Nancy Mitford wrote an essay out of the choice of wording; see U and non-U English. Some manufacturers show this uneasiness with the word and its class attributes: American Standard, the largest manufacturer, sells them as "toilets", yet the higher priced products of the Kohler Company, often installed in more expensive housing, are sold as commodes or closets, words which also carry other meanings. Confusingly, products imported from Japan such as TOTO are referred to as "toilets", even though they carry the cachet of higher cost and quality. When referring to the room or the actual piece of equipment, the word toilet is often substituted with other euphemisms and dysphemisms (See toilet humor).

As old euphemisms have become accepted, they have been progressively replaced by newer ones, an example of the euphemism treadmill at work. The choice of word used to describe the room or the piece of plumbing relies as much on regional variation (dialect) as on social situation and level of formality (register).

Lavatory

The term lavatory, abbreviated in slang to lav, derives from the Latin: lavātōrium, which in turn comes from Latin lavō ("I wash"). The word was used to refer to a vessel for washing, such as a sink/wash basin, and thus came to mean a room with such washing vessels, as for example in medieval monasteries, where the lavatorium was the monks' communal washing area. The toilets in monasteries however were not in the lavatorium but in the reredorter. Nevertheless the word was later associated with toilets and the meaning evolved into its current one, namely the polite and formal euphemism for a toilet and the room containing it. Lavatory is the common signage for toilets on commercial airlines around the world, see Aircraft lavatory.

Loo

The origin of the (chiefly British) term loo is unknown. According to the OED, the etymology is obscure, but it might derive from the word Waterloo. The first recorded entry is in fact from James Joyce's Ulysses (1922): "O yes, mon loup. How much cost? Waterloo. Watercloset".

Other theories are:

• That it derives from the term "gardyloo" (a corruption of the French phrase gardez l'eau! (or maybe garde l'eau!) loosely translated as "watch out for the water!") which was used in medieval times when chamber pots were emptied from a window onto the street. However the first recorded usage of "loo" comes long after this term became obsolete.
• That the word comes from nautical terminology, loo being an old-fashioned word for lee. The standard nautical pronunciation (in British English) of leeward is looward. Early ships were not fitted with toilets but the crew would urinate over the side of the vessel. However it was important to use the leeward side. Using the windward side would result in the urine blown back on board: hence the phrases 'pissing into the wind' and 'spitting into the wind'. Even now most yachtsmen refer to the loo rather than the heads.
• That the word derives from the 17th century preacher Louis Bourdaloue. Bourdaloue's sermons at the Saint Paul-Saint Louis Church in Paris lasted at least three hours and myth has it that wealthier ladies took along "travelling" chamber pots that could be hidden under their dresses whenever the need arose to avoid the need to leave. Due to the popularity of the myth the bowls became known as Bourdaloues after the preacher and the name became corrupted to portaloos and sometimes just plain loos due to the habit of shortening words in slang.^{[citation needed]}
• That the word comes from the French word lieu (place), as in lieu d'aisance (literally: "place of ease", a common euphemism for lavatory) or lieu à l'anglaise (literally: "English place"). From around 1770 the term lieu à l'anglaise began to appear in France, referring to this English invention which was sometimes installed for the benefit of English visitors. (Ashenburg p. 138)

WC

The WC refers to the initial letters of Water Closet, which, despite being an English language abbreviation, is not in common use in English-speaking countries – but is widely used internationally: in France (pronounced "le vay-say" or "le vater"), in Italy (pronounced "vi-ci" or "vater"), Romania (pronounced "veh-cheu"), the Netherlands (pronounced "waysay"), Germany, Switzerland and Hungary (pronounced "ve-tse"), Denmark (pronounced "ve-se"), Norway (pronounced "vay-say"), Poland (pronounced "vu-tse"), Spain (pronounced "uve-cé" or "váter"), and others.^{[citation needed]}

CR

In the Philippines the abbreviation CR (Comfort Room) is commonly used.

Other

Lexicographer Eric Partridge derives khazi, also spelt karzy, kharsie or carzey, from a low Cockney word carsey originating in the late 19th century and meaning a privy. Carsey also referred to a den or brothel. It is presumably derived from the Italian casa for house, with the spelling influenced by its similar sound to khaki. Khazi is now most commonly used in the city of Liverpool in the UK, away from its cockney slang roots.

An alternative derivation is from Christopher Chippindale, who states that khazi derives from Army slang used by expatriate officers of the British Empire who took a dislike to the habits of, and steaming rain forest inhabited by, the Khasi people of the Khasia hills on the northern frontier of India.

The Dunny is an Australian expression for an outside toilet or outhouse. The person who appeared weekly to empty the pan beneath the seat was known as the dunnyman. The word derives from the British dialect word dunnekin, meaning dung-house.

It is now an informal word used for any lavatory and is most often used referring to drop or pit lavatories in the Australian bush, which are also called thunderboxes.

The Privy is an old fashioned term used more in the North of England and in Scotland; "privy" is an old alternative for "private", as in Privy council. It is used interchangeably in North America for various terms for the outhouse.

The netty is the most common word used in North East England. Many outsiders are often bemused when a Geordie or a Mackem states they are "gannin te the netty" (going to the bathroom). The etymology of the word is uncertain, but it is believed to be either derived from a corruption of "necessity" or from graffiti scrawled on Hadrian's Wall. It is linked to the Italian word gabinetti meaning "toilets" (singular gabinetto).

Latrine is a term common in the military, specifically for the Army and Air Force for any point of entry facility where human waste is disposed of, which a civilian might call a bathroom or toilet, regardless of how modern or primitive it is. Traditionally the Royal Navy along with the United States Navy and Marine Corps use the nautical term "Head" to describe the same type of facility, regardless of whether it is located on a ship or on the land.

The Jacks is Irish slang for toilet. It perhaps derives from "jakes", an old English term.

The standalone toilet has been variously known as backhouse, house of ease, house of office, little house, or outhouse. The house of office was a common name for a toilet in seventeenth century England, used by, among others, Samuel Pepys on numerous occasions: October 23, 1660: ...going down into my cellar..., I put my foot into a great heap of turds, by which I find Mr Turner's house of office is full and comes into my cellar.

Culture

Toilet in Delftware style.

Toilet Bus in Samsun

There are also many different ways to clean oneself after using the toilet depends significantly on national mores and local resources. An important part of early childhood education is toilet training.

The most common method of cleaning after using a toilet in the Western world is toilet paper or sometimes using a bidet. In the Middle East and some countries in Asia, and South Asian countries such as India and Pakistan, the custom is to use water, either with or without toilet paper.^{[citation needed]} Traditionally, the left hand is used for this, for which reason that hand is considered impolite or polluted in many eastern countries. The Islamic faith has a particular code, Qaḍāʼ al-Ḥājah describing Islamic toilet etiquette.

Toilet humour is a name given to a type of off-colour humour dealing with defecation, urination, and flatulence.

See also

• Bidet
• Blackwater (waste)
• Close stool
• Dansker - toilet facility, belonging to a castle
• Ecological sanitation
• Flush!: The Scoop on Poop throughout the Ages (book)
• Flying toilet
• Garderobe
• Latrines
• Public toilet
• Japanese toilets
• Toilet-related injury
• Urinal
• The Truth About Poop (book)
• World Toilet Organization (organizers of the annual "World Toilet Summit")

References

Further reading

• "Flushed with success: new waste-reducing design in modern toiletry" by Jim Motavalli. E: The Environmental Magazine, March–April, 1998
• Garden Houses and Privies, Authentic Details for Design and Restoration by Peter Joel Harrison. John Wiley & Sons, 2002. ISBN 0-471-20332-7 Member of the Outhouse Wall of Fame
• Slanguage - a Dictionary of Irish slang by Bernard Share. (Dublin,1997) ISBN 0-7171-2683-8
• Temples of Convenience - And Chambers of Delight by Lucinda Lambton (NPI Media Group, 2006) ISBN 0-7524-3893-X
• Thunder, Flush and Thomas Crapper by Adam Hart-Davis (Michael O'Mara Books, 1997), ISBN 1-57076-081-0.
• Clean and Decent - The Fascinating History of the Bathroom and the Water Closet by Lawrence Wright (Routledge and Kegan Paul, London, 1960).
• Teresi, Dick; et al. (2002). Lost Discoveries: The Ancient Roots of Modern Science--from the Babylonians to the Maya. New York: Simon & Schuster. pp. 351–352. ISBN 0-684-83718-8. 
• Compendium of Sanitation Systems and Technologies - freely available PDF.
• The hidden room A Short History of the ‘Privy’ by Johnny Ragland
• The Principles And Practice Of Modern House-Construction: Chapter VIII. Interception Or Dry Systems G. Lister Sutcliffe. 1900
• The Dirt on Clean: An Unsanitized History. Katherine Ashenburg. Alfred A Knopf Canada, Toronto 2007. ISBN 978-0-676-97663-2

External links

• Toilets at the Open Directory Project

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

• 1. トイレトレーニング toilet training
• 2. Anesthesia for the patient with myasthenia gravis
• 3. 幼児および小児における急性便秘の予防および治療 prevention and treatment of acute constipation in infants and children
• 4. 乳児および小児の機能性便秘：臨床的特徴と鑑別診断 functional constipation in infants and children clinical features and differential diagnosis
• 5. 慢性化膿性中耳炎（CSOM）：予防、治療、予後、および合併症 chronic suppurative otitis media csom prevention treatment prognosis and complications

English Journal

• Epidemiological study for the assessment of health risks associated with graywater reuse for irrigation in arid regions.

• Busgang A1, Friedler E2, Ovadia O3, Gross A4.
• The Science of the total environment.Sci Total Environ.2015 Dec 15;538:230-9. doi: 10.1016/j.scitotenv.2015.08.009. Epub 2015 Aug 24.
• Graywater reuse is rapidly gaining popularity as a viable source of reclaimed water, mainly for garden irrigation and toilet flushing. The purpose of this study was to determine, by epidemiological survey, the risk for gastroenteritis symptoms associated with graywater reuse. The study comprised a w
• PMID 26311579

• "Our child's significant disability shapes our lives": experiences of family social participation.

• Davey H1, Imms C2,3,4, Fossey E5.
• Disability and rehabilitation.Disabil Rehabil.2015 Dec;37(24):2264-71. doi: 10.3109/09638288.2015.1019013. Epub 2015 Mar 4.
• PURPOSE: This study explored the stories of parents of youth with severe physical disabilities to understand how they viewed the quality of their family social participation; the barriers to social participation faced as families and the strategies and supports that might be used to reduce these bar
• PMID 25738914

• Slum inhabitants' perceptions and decision-making processes related to an innovative sanitation service: evaluating the Blue Diversion Toilet in Kampala (Uganda).

• O'Keefe M1, Messmer U2, Lüthi C2, Tobias R1.
• International journal of environmental health research.Int J Environ Health Res.2015 Dec;25(6):670-84. doi: 10.1080/09603123.2015.1007842. Epub 2015 Feb 16.
• The inadequate provision of sanitation in informal urban settlements, also known as slums, continues to be an important issue. New technologies and services are being designed to solve this problem. However, the history of failed sanitation programmes and projects highlights a lack of understanding
• PMID 25684115

• Legionella pneumophila: From potable water to treated greywater; quantification and removal during treatment.

• Blanky M1, Rodríguez-Martínez S2, Halpern M3, Friedler E1.
• The Science of the total environment.Sci Total Environ.2015 Nov 15;533:557-65. doi: 10.1016/j.scitotenv.2015.06.121. Epub 2015 Jul 17.
• Greywater is an alternative water source that can help alleviate stress on depleted water resources. The main options for greywater reuse are toilet flushing and garden irrigation, both producing aerosols. For that reason transmission of inhalable pathogens like Legionella present a potential risk.
• PMID 26188406

Japanese Journal

• 人工内耳装用児に見られた聴覚過敏症について

• 田中 美郷,芦野 聡子,小山 由美,吉田 有子,針谷 しげ子
• 音声言語医学 52(4), 360-365, 2011-10-20
• われわれが扱った約80名の人工内耳（CI）装用児中，CI装着後聴覚過敏を訴えた子ども9名（5-14歳）の聴覚過敏症の特徴を，非CI児10名（健聴児および感音難聴児各5名，4-12歳）のそれと比較した．CI児9名中6名および非CI児10名中6名はいずれも自閉症スペクトラム障碍（ASD）ないしアスペルガー症候群を伴っていた．聴覚過敏症の原因音は電気掃除機やヘアドライヤー，水洗トイレの音，工事現場の大き …
• NAID 10029682000

• 無水し尿分離トイレの導入による東日本大震災被災地の衛生対策

• 藤枝 絢子,原田 英典,小林 広英,日下部 武敏,清水 芳久
• EICA 16(2), 97-100, 2011-10-15
• NAID 10029624370

• 平成22年度委員会終了報告書概要 排水システムの設計施工法の拡充に向けた研究

• 稲田 朝夫
• 空気調和・衛生工学 85(10), 819-822, 2011-10
• NAID 40019019094

Related Links

• 日本トイレ研究所（Japan Toilet Labo.）

11月10日（いいトイレ）は「トイレの日」。すべての人が安心してトイレを利用でき、ともに 暮らせる社会を。NPO法人日本トイレ研究所（Japan Toilet Labo.）です。

• Toilet - Wikipedia, the free encyclopedia

A toilet is a sanitation fixture used primarily for the disposal of human excrement and urine, often found in a small room referred to as a toilet/bathroom/lavatory. Flush toilets, which are common in many parts of the world, may be connected to a ...

• 映画『トイレット』公式サイト

脚本・監督：荻上直子（『かもめ食堂』『めがね』） 8月28日（土）、新宿ピカデリー、銀座 テアトルシネマ、渋谷シネクイントほか全国ロードショー.

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関連記事

「toil」

「toil」

　　[★]

• vi.

• 骨折って働く

• vt.

• ～を疲れさせる

• n.

• 苦しい仕事、骨折り、労苦