1. Painted with wax colors fixed with heat, or with any process in which colors are burned in.
2. A work of art produced by an encaustic process.

Encaustic painting, also called "hot wax painting", involves using heated beeswax to which colored pigments are added. The liquid/paste is then applied to a surface; usually prepared wood, although canvas and other materials are also used..

The simplist encaustic mixture can be made from adding pigments to beeswax, but there are several other recipes that can be used; some containing other types of waxes, damar resin, linseed oil, or other ingredients. Pure, powdered pigments can be purchased and used, or some mixtures use oil paints or other forms of pigment.