PLATE

(*) 1. In cartography: a. a printing plate of zinc, aluminum, or engraved copper; b. collective term for all “states” of an engraved map reproduced from the same engraved printing plate; c. all detail to appear on a map or chart which will be reproduced from a single printing plate (e.g., the “blue plate” or the “contour plate”). 2. In photography, a transparent medium, usually glass, coated with a photographic emulsion. See also diapositive.