/ Dictionary / Index C catadioptric: Meaning and Definition of Find definitions for: cat•a•di•op•tric Pronunciation: (kat"u-dī-op'trik), [key] — adj. Optics. pertaining to or produced by both reflection and refraction. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. catacomb catadromous Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language