A printing process of electrostatic electrophotography. The process uses a dry powder that adheres to an electrically charged surface. The surface is charged after being exposed to light from an image of the document to be copied.
1952, trademark taken out by Haloid Co. of Rochester, N.Y., for a copying device, from earlier xerography "photographic reduplication without liquid developers" (1948), from Gk. xeros "dry" + -ography as in photography. The verb is first attested 1966, from the noun, despite strenuous objection from the Xerox copyright department.