lithotypy

Century Dictionary and Cyclopedia

1. n. A peculiar process of stereotyping by pressing the types into a soft mold or matrix. On the removal of the types the hollows left by them are filled with a mixture of gum shellac, fine sand, tar, and linseed-oil in a heated state. This mixture when thrown into cold water becomes hard, and forms a plate ready to be printed from. From the sand present in it, it has a stony texture.

Wiktionary

1. n. The art or process of making a kind of hard stereotype plate, by pressing into a mould, taken from a page of type or other matter, a mixture of shellac and fine sand, together with a little tar and linseed oil, all in a heated state.

GNU Webster's 1913

1. n. 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.