encaustic
1. en.caus.tic \in-'ko.-stik\ \-sti-k(*-)le-\ aj [L encausticus, fr. Gk enkaustikos, fr. enkaiein to burn in,]fr. en- + kaiein to burn : of or relating to encaustic - en.caus.ti.cal.ly av 2. encaustic n 1: a paint mixed with melted beeswax and after application fixed by heat 2: the method involving the use of encaustic