frame

Single photograph in a sequence representing motion, or movement, on film; in a network, a unit of data; in word processing or desktop publishing, a marked-out area on a page that can contain text or graphics.

What appears to be motion on a cinema or TV screen is actually a rapid sequence of single shots. Because of limitations in the human eye - known as the Phi phenomenon - those individual shots, if played in sequence at a rate of 24 to 30 frames per second, make the motion thus captured appear continuous.