Lithotypy \Li*thot"y*py\, n. [Litho- + -typy.]
The art or process of making a kind of hard, stereotype
plate, by pressing into a mold, taken from a page of type or
other matter, a composition of gum shellac and sand of a fine
quality, together with a little tar and linseed oil, all in a
heated state.
[1913 Webster]