WordNet

having a tendency (to); often used in combination; "a child prone to mischief"; "failure-prone"
lying face downward (同)prostrate
at risk of or subject to experiencing something usually unpleasant; "he is apt to lose"; "she is liable to forget" (同)liable
mentally quick and resourceful; "an apt pupil"; "you are a clever man...you reason well and your wit is bold"-Bram Stoker (同)clever
(usually followed by `to' (同)disposed, given, minded, tending
slanting diagonally across the grain of a fabric; "a bias fold"
a partiality that prevents objective consideration of an issue or situation (同)prejudice, preconception
cause to be biased (同)predetermine
influence in an unfair way; "you are biasing my choice by telling me yours"
the state of being legally obliged and responsible
the quality of being something that holds you back
a characteristic likelihood of or natural disposition toward a certain condition or character or effect; "the alkaline inclination of the local waters"; "fabric with a tendency to shrink" (同)inclination
a general direction in which something tends to move; "the shoreward tendency of the current"; "the trend of the stock market" (同)trend
having more than the average number of accidents
being disposed to do something; "accident proneness"
in favor of a proposition, opinion, etc.
an argument in favor of a proposal
in favor of (an action or proposal etc.); "a pro vote"

PrepTutorEJDIC

《補語にのみ用いて》傾向がある / うつぶせの,平伏した
《補語にのみ用いて》《『be apt to』 do》(望ましくないことについて)…『しがちである』)(be liable to do) / 《補語にのみ用いて》《『be apt to』 do》《米話》…しそうである(be likely to do) / 『適した』,『ふさわしい』,適切な / 利発な,物覚えが早い
〈C〉(布地の裁断や縫い目の)斜線,バイアス / 〈C〉〈U〉(…に対する)心理的傾向,性癖;先入観;偏見《+『toward』(『against』,『for』)+『名』》 / 斜めの;斜めに裁った / (…に対して)〈人〉‘に'偏見を抱かせる,〈人の意見・心〉'を'一方に片寄らせる / 《+『名』+『against』(『towards, in favor of』)+『名』》
〈U〉(…の)傾向のあること《+『to』+『名』》 / 〈U〉(特に債務などに対する)責任・義務 / 〈C〉不利な点,ハンディキャップ / 〈C〉《複数形で》《単数扱い》負債
『傾向』 / 『性癖』,癖
(…に向かう)『傾向』,すう勢,流行《+toward+名》 / (川・道路などの)向き / 《方向を表す副詞[句]を伴って》(ある方向へ)〈川・道路などが〉向かう / (ある方向に)〈事態・考えなどが〉向かう傾向がある《+to(toward)+名》
(普通の人より)事故を起こしやすい
=professional
賛成論;賛成票(者) / 賛成して

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/05/21 07:13:07」(JST)

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[Wiki en表示]

Prone position (/proʊn/) is a body position in which one lies flat with the chest down and back up. Using anatomical terms of location, the dorsal side is up, and the ventral side is down. The supine position is the 180° contrast.

Supine position and prone position

Two soldiers in prone position

Etymology

The word "prone," meaning "naturally inclined to something, apt, liable," has been recorded in English since 1382; the meaning "lying face-down" was first recorded in 1578, but is also referred to as "lying down" or "going prone."

"Prone" derives from the Latin pronus: "bent forward, inclined to," from the adverbial form of the prefix pro- "forward." Both the original, literal, and the derived figurative sense were used in Latin, but the figurative is older in English.

Anatomy

In anatomy, the prone position is a position of the body lying face down. It is opposed to the supine position which is face up. Using the terms defined in the anatomical position, the ventral side is down, and the dorsal side is up.

With respect to the forearm, prone refers to that configuration where the palm of the hand is directed posteriorly, and the radius and ulna are crossed.

Shooting

In competitive shooting, the prone position is the position of a shooter lying face down on the ground. It is considered the easiest and most accurate position as the ground provides extra stability. It is the starting position in three positions events. Currently the Olympics only have one purely prone event, the fifty meters men's rifle prone. Both men and women also have the fifty meters rifle three positions. Many video games (particularly first-person shooters) allow the player character to go into the prone position.

50m Prone Men (ISSF)

Male shooters shoot a .22LR calibre rifle (smallbore) over a course of fire of 60 shots to count, after unlimited sighting shots, in a time limit of 1 hour and 15 minutes (when using electronic targets). If necessary, an 'elimination' course of fire may be undertaken to reduce the number of shooters to the number that may fire simultaneously in a 'qualification' round. Each shot may score from 0 to 10 points, with no decimal points (e.g. 0,1,2,3,4,5,6,7,8,9,10, but not 3.2 or 9.8 etc.) The maximum score for an elimination or qualification round is 600 points. The top 8 shooters in the qualification round will be selected to shoot 'shot-for-shot' in an 'Olympic' final. The final is 10 shots, shot after a five minute period for unlimited sighters. The 10 shots are shot on command in a 45 second time-span, where each shooter must shoot one shot. Following each individual finals shot, the individual shooter's score for that shot is read to the audience. Shots in the final are scored to one decimal place, e.g. a shooter may score 9.8 or 10.6 in the finals for a shot, whereas in the qualification or elimination round those same shots would score 9 or 10 respectively. The maximum score for 10 shots in the finals is 109.0, with 10.9 being the maximum score for each shot. The Finals score for the 10 shots is added to the score for the qualification round.

UK Prone (NSRA)

The UK national shooting body also has courses of fire for prone shooting at multiple distances and targets. Commonly, this is split into what is known as 'short' and 'long' ranges.

UK Prone Short Range

The NSRA generally refers to shooting .22LR calibre rifles over a distance of between 15 yards and 25 metres 'indoors' as being short range shooting. Targets are generally outward gauging (touching a ring on the target scores the lower of the two adjacent scores), except on some of the Schools and older targets (e.g. 5 bull targets). Being indoors, no allowance is necessary for wind, light or other changes. Shots are scored as decimal values from 0 to 10, with no decimal places.

UK Prone Long Range

UK Long range shooting is generally over either 50 yards, 50 metres or 100 yards distance outdoors. Targets vary, but generally the ISSF 50M (scaled) is used for 50 yards or 50 metres and a proportional sized target is used for 100 yards. A 50-yard, 50-metre or 100-yard target is generally constructed to allow 20 shots to count, to be executed during one 'detail' of 20 minutes duration. Sighting shots are included in that time period.

Outdoors, variables such as light, wind, temperature, humidity and mirage affect the target image and bullet trajectory. To help shooters, most ranges have wind flags placed at useful positions around the range to display the wind conditions.

Pilots and the prone position

Hang glider pilot in harness.

The prone position is also used to describe the way pilots and other crew may be positioned in an aircraft; lying on their stomachs rather than seated in a normal upright position. During World War II, the bomb aimer in some bombers would be positioned this way to be better able to view the ground through a transparent panel or bubble in the nose of a bomber. Later, it was suggested that a pilot in the prone position might be more effective in some kinds of high-speed aircraft, because it would permit the pilot to withstand a greater g-force in the upward and downward direction with respect to the plane, and many speculative designs of the 1950s featured this arrangement. However, it never became mainstream, as testing revealed that the increased difficulty of operating aircraft controls in the prone position outweighed the advantages. Two examples of this approach are seen in the Savoia-Marchetti SM.93 and the Gloster Meteor F8 "Prone Pilot". Modern hang gliders are typically piloted in the prone position.

Sources

EtymologyOnLine

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