Catacaustic

//ˌkætəˈkɑstɪk// noun

Definitions

Noun
  1. 1
    a caustic curve formed by light reflecting from a curved surface
  2. 2
    a caustic curve formed by light reflecting from a curved surface. wordnet
  3. 3
    the envelope of all rays that emanate from a specified point (the radiant point) and reflect from a given curve; the evolute of the orthotomic

Etymology

From cata- + caustic.

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