/ Dictionary / Index C catacaustic: Meaning and Definition of Find definitions for: cat•a•caus•tic Pronunciation: (kat"u-kô'stik), [key] — Math., Math.,Optics. —adj. noting a caustic surface or curve formed by the reflection of light. —n. a catacaustic surface or curve. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. catabolize catachresis Related Content Daily Word Quiz: wary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language