catacaustic


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catacaustic

(ˌkætəˈkɔːstɪk; -ˈkɒs-) physics
adj
(General Physics) (of a caustic curve or surface) formed by reflected light rays. Compare diacaustic
n
(General Physics) a catacaustic curve or surface
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In mathematical language, a catacaustic is a set of reflected rays and a diacaustic is a set of refracted rays.