a. [ L. encausticus, Gr. &unr_;, fr. &unr_; to burn in; &unr_; in + &unr_; to burn: cf. F. encaustique. See Caustic, and cf. Ink. ] (Fine Arts) Prepared by means of heat; burned in. [ 1913 Webster ]

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. [ 1913 Webster ]

n. [ L. encaustica, Gr. &unr_; (sc. &unr_;): 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. [ 1913 Webster ]