• (n.) A caustic curve formed by reflection of light. • (a.) Relating to, or having the properties of, a caustic curve formed by reflection. See Caustic, a.
Cat`a·caus'tic adjective [ Prefix cata + caustic .] (Physics) Relating to, or having the properties of, a caustic curve formed by reflection. See Caustic , adjective Nichol. 
catacaustic 1. Relating to, or having the properties of, a caustic curve formed by reflection. 2. A caustic curve formed by reflection of light.