\En*caus"tic\, a. [L. encausticus, Gr. ?, fr. ? to
burn in; ? in + ? to burn: cf. F. encaustique. See {Caustic},
and cf. {Ink}.] (Fine Arts)
Prepared by means of heat; burned in.
{Encaustic painting} (Fine Arts), painting by means of wax
   with which the colors are combined, and which is
   afterwards fused with hot irons, thus fixing the colors.
{Encaustic tile} (Fine Arts), an earthenware tile which has a
   decorative pattern and is not wholly of one color.

\En*caus"tic\, n. [L. encaustica, Gr. ? (sc. ?): cf.
F. encaustique. See {Encaustic}, a.]
The method of painting in heated wax, or in any way where
heat is used to fix the colors.