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A method of offset printing using photomechanical plates.
(Printing, Lithography & Bookbinding) printing an offset process in which the plates are produced photomechanically
pho•to-off•set(ˌfoʊ toʊˈɔfˌsɛt, -ˈɒf-)
n., v. -set, -set•ting. n.
1. a method of printing, based on photolithography, in which the inked image is transferred from the metal plate to a rubber surface and then to the paper.v.t., v.i.
2. to print by photo-offset.