Prone position (n) 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. ==Etymology == The word `prone,` meaning `naturally inclined to something, apt, liable,` has been recorded in English s...
The posture of an individual lying face down. ... (12 Dec 1998) ... 
a position with the patient lying face down with arms bent comfortably at the elbow and padded with the armboards positioned forward.
Type: Term Definitions: 1. lying face down.
Lying down on the stomach, used while shooting. The rifle can only be in contact with the athlete’s hands, shoulder and cheek.