Definition for Frame
From Biology Forums Dictionary
1) individual photograph on a strip of film.
2) Frames in essence are still images that are collected in quick succession, developed, and projected giving the illusion of motion. Each individual, or still, image on motion picture film is referred to as a frame.
3) An individual image on a strip of film. In silent films frames were projected at the rate of 16 frames per second; in sound film they are projected at the rate of 24 frames per second.