catacaustic
UK /ˌkætəˈkɔːstɪk/ US /ˌkætəˈkɑstɪk/
noun 2
Definitions
noun
1
a caustic curve formed by light reflecting from a curved surface
2
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
Your note
not saved0 chars