Encaustic

a. [Lat. encausticus, Gr. ἐγκαυστικός, from ἐγκαίειν, to burn in, from ἐν, in, and καίειν, to burn; Fr. encaustique.] Pertaining to the art of burning in colors; — applied to a species of painting in wax liquefied by heat, whereby the colors acquire brilliancy and durability; also, to painting on glass or porcelain, or any other style where colors are fixed by heat; as, encaustic tiles, brick, &c.

n. [Lat. encaustica, Gr. ἐγκαυστική (sc. τέχνη), Fr. encaustique. See supra.] The method of painting in heated or burnt wax, or in any way where heat is used to fix the colors.