Căt'a-caus'tic1, a.
a. [Gr. κατά, against, καυστικός, burning, from καίειν, to burn; Fr. catacaustique.] (Geom. & Optics.) Relating to a caustic curve formed by reflection. See CAUSTIC. Nichol.
2 entries under this word
Catacaustic
Căt'a-caus'tic2, n.
n. A caustic curve formed by reflection of light. Nichol.