Meaning of catacaustic

cat•a•caus•tic

Pronunciation: (kat"u-kô'stik), [key]
— Math., Math.,Optics.
—adj.
  1. noting a caustic surface or curve formed by the reflection of light.
—n.
  1. a catacaustic surface or curve.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.