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catacaustic

[kat-uh-kaw-stik]Mathematics, Optics.
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adjective
  1. caustic surface
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noun
  1. a catacaustic surface or curve.
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Origin of catacaustic

First recorded in 1700–10; cata- + caustic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for catacaustic

catacaustic

adjective
  1. (of a caustic curve or surface) formed by reflected light raysCompare diacaustic
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noun
  1. a catacaustic curve or surface
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012