A transparent sheet of celluloid or plastic, used to layer elements of an animated image on top of a background in order to reduce the number of elements that need to be re-created for each frame.
A transparent sheet on which a single stage of an animated figure's movement has been painted: it is laid over a painted background to form the completed image.
Origin of cel
Short for celluloid
American Heritage Dictionary of the English Language, 5th Edition
Cel Sentence Examples
The word h7roXo'yia is used by Origen (Contra Cel.
p. 258), besides constructing satisfactory formulae for the barometrical determination of heights (Mec. cel.
P 4 Lplace (Mec. Cel.
The waterbed, for example, was first dreamt of by Robert Heinlein in ''Stranger in a Strange Land'', and the designs for many cel phones started out looking like the communicators in the popular TV and movie series ''Star Trek''.
It may be added that he first examined the conditions of stability of the system formed by Saturn's rings, pointed out the necessity for their rotation, and fixed for it a period (Io h 33 m) virtually identical with that established by the observations of Herschel; that he detected the existence in the solar system of an invariable plane such that the sum of the products of the planetary masses by the projections upon it of the areas described by their radii vectores in a given time is a maximum; and made notable advances in the theory of astronomical refraction (Mec. cel.