/ Dictionary / Index C cataract: Meaning and Definition of Find definitions for: cat•a•ract Pronunciation: (kat'u-rakt"), [key] — n. a descent of water over a steep surface; a waterfall, esp. one of considerable size. any furious rush or downpour of water; deluge. an abnormality of the eye, characterized by opacity of the lens. the opaque area. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cataract (Thesaurus) catapult catarrh Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language