A printed image produced by lithography; an image produced by etching the image onto a flat surface, then copying the etched surface by applying ink (or the equivalent) to it and pressing another material against it.
The process of printing a lithograph on a hard, flat surface; originally the printing surface was a flat piece of stone that was etched with acid to form a surface that would selectively transfer ink to the paper; the stone has now been replaced, in general, with a metal plate.