WordNet

an open receptacle for holding or displaying or serving articles or food
(of an animal) having no home or having wandered away from home; "a stray calf"; "a stray dog"
an animal that has strayed (especially a domestic animal)
wander from a direct course or at random; "The child strayed from the path and her parents lost sight of her"; "dont drift from the set course" (同)err, drift
a receptacle for the ash from smokers cigars or cigarettes
table linen consisting of a small cloth for a tray
a tray for carrying your food in a cafeteria

PrepTutorEJDIC

浅いへりのついた平たい容器,(料理などを運んだり盛ったりするための)『盆』,皿 / (机上書類用の)整理箱 / (また tearful)盆(皿)一杯[の量]
(…から)『それて道に迷う』,さまよい出る,はぐれる《+『from』+『名』》 / 〈考え・話題などが〉(…から)わきへそれる《+『from』+『名』》 / 『道に迷った』,はぐれた / 飼い主のいない / まばらの,離れ離れの,時たまの / (弾丸などが)それた / 浮浪児,迷い子 / 迷った動物;野良犬(猫)
(たばこの)灰ざら

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/12/02 03:46:48」(JST)

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Russian Zhostovo tray.

Brass plate circa 1920.

Waiter with waitperson service tray in Vienna, Austria.

A tray is a shallow platform designed for carrying things. It can be fashioned from numerous materials, including silver, brass, sheet iron, paperboard, wood, melamine, and molded pulp. Trays range in cost from inexpensive molded pulp trays which are disposable, to inexpensive melamine trays used in cafeterias, to mid-priced wooden trays used in a home, to expensive silver trays used in luxury hotels. Some examples have raised galleries, handles, and short feet for support.

Trays are flat, but with raised edges to stop things from sliding off them. They are made in a range of shapes but are commonly found in oval or rectangular forms, sometimes with cutout or attached handles with which to carry them.

Examples

Plastic tray.

A seed tray used in horticulture for sowing and taking plant cuttings and growing plugs

Pasztecik szczeciński on a small paper tray, with barszcz in a beaker, Poland

Molded pulp drink tray

A butler's tray often has a gallery, or deeper surround, handles on the long sides to facilitate carrying (usually cut into the surround), and a portable stand with folding legs. It is used for the service of drinks and generally serves as a convenient side table.
A cafeteria tray is used for carrying items in a cafeteria. It is typically made of plastic or fiberglass. A compartment tray or mess tray is a cafeteria tray designed to be used directly, without dishes - it incorporates shallow compartments in which different types of food are placed.
A molded pulp tray is a disposable (or recyclable) tray provided by fast food restaurants, coffee shops and movie theaters. The tray is designed to hold four disposable cups.
Surgical trays are used to carry surgical instruments, are rectangular and made of stainless steel to resist the heat of sterilization without corrosion.
Seed trays are used for propagating vegetables and flowers and other plants from seed.^[1] They are also used for taking plant cuttings. The trays for seedling production are made of expanded polystyrene or polythene. They come in many sizes; the most common are the Danish and the European sized trays.
A darkroom tray, also known as print developing tray, is used in photography.
A dental impression tray is a receptacle or device that is used to carry impression material to the mouth, confine the material in apposition to the surfaces to be recorded, and control the impression material while it sets to form the impression.
A baking tray is used to cook a variety of foods in an oven, including vegetables and meats such as whole chickens. It allows food to be very exposed to the hot air inside the oven whilst preventing any fats of liquids from falling onto the oven floor.

References

^ Use of seed trays

External links

Media related to trays at Wikimedia Commons
The dictionary definition of tray at Wiktionary

UpToDate Contents

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1. 超音波内視鏡ガイド下でのtru-cut針を使用した生検endoscopic ultrasound guided trucut biopsy [show details]
…the cutting sheath over the specimen tray. Distinct echo features are discernible for the cutting sheath and specimen tray This permits imaging of the specimen tray within the target tissue, thereby allowing …
2. 食物アレルギーのマネージメント：回避策management of food allergy avoidance [show details]
…Relevant levels were detectable in surface samples (ie, tray table) but in very low amounts (ie, protein from the entire wiped surface of the tray table would need to be consumed to trigger a reaction) …
3. 緊急時の輪状甲状靭帯（軟骨間膜）切開emergency cricothyrotomy cricothyroidotomy [show details]
…familiarity with the necessary equipment. Keep the cricothyrotomy equipment tray simple , in contrast to the typical tracheostomy tray, which may contain dozens of instruments. Only a few instruments are required …
4. Approach to stool microscopyapproach to stool microscopy [show details]
…a dark, dense center. Trichuris eggs have distinctive mucus plugs at either end as well as a "tea tray" appearance. Hookworm eggs are optically clear at the edges with a dense center composed of one or…
5. 皮膚科手術：合併症の予防と治療skin surgery prevention and treatment of complications [show details]
…patient experiences pain, even if minimal. It is thus advisable to have anesthetic on the procedure tray to avoid delays with the procedure. Adverse effects of local anesthetics, including lidocaine toxicity …

English Journal

Validation of a predictive model coupling gas transfer and microbial growth in fresh food packed under modified atmosphere.

Guillard V1, Couvert O2, Stahl V3, Hanin A4, Denis C4, Huchet V5, Chaix E6, Loriot C7, Vincelot T7, Thuault D5.
Food microbiology.Food Microbiol.2016 Sep;58:43-55. doi: 10.1016/j.fm.2016.03.011. Epub 2016 Mar 25.
Predicting microbial safety of fresh products in modified atmosphere packaging implies to take into account the dynamic of O2, CO2 and N2 exchanges in the system and its effect on microbial growth. In this paper a mechanistic model coupling gas transfer and predictive microbiology was validated usin
PMID 27217358

Self-control assessments of capuchin monkeys with the rotating tray task and the accumulation task.

Beran MJ1, Perdue BM2, Rossettie MS3, James BT4, Whitham W4, Walker B4, Futch SE5, Parrish AE4.
Behavioural processes.Behav Processes.2016 Aug;129:68-79. doi: 10.1016/j.beproc.2016.06.007. Epub 2016 Jun 11.
Recent studies of delay of gratification in capuchin monkeys using a rotating tray (RT) task have shown improved self-control performance in these animals in comparison to the accumulation (AC) task. In this study, we investigated whether this improvement resulted from the difference in methods betw
PMID 27298233

Occurrence of diarrhoeagenic Escherichia coli virulence genes in water and bed sediments of a river used by communities in Gauteng, South Africa.

Abia AL1, Ubomba-Jaswa E2, Momba MN3.
Environmental science and pollution research international.Environ Sci Pollut Res Int.2016 Aug;23(15):15665-74. doi: 10.1007/s11356-016-6762-6. Epub 2016 May 2.
In most developing countries, especially in Southern Africa, little is known about the presence of diarrhoeagenic Escherichia coli (DEC) pathotypes in riverbed sediments. The present study sought to investigate the presence of DEC virulence genes in riverbed sediments of the Apies River, a river use
PMID 27137190

Characteristics of thermoplastic sugar palm Starch/Agar blend: Thermal, tensile, and physical properties.

Jumaidin R1, Sapuan SM2, Jawaid M3, Ishak MR4, Sahari J5.
International journal of biological macromolecules.Int J Biol Macromol.2016 Aug;89:575-81. doi: 10.1016/j.ijbiomac.2016.05.028. Epub 2016 May 10.
The aim of this work is to study the behavior of biodegradable sugar palm starch (SPS) based thermoplastic containing agar in the range of 10-40wt%. The thermoplastics were melt-mixed and then hot pressed at 140°C for 10min. SEM investigation showed good miscibility between SPS and agar. FT-IR anal
PMID 27177458