/ Dictionary / Index C cytotoxicity: Meaning and Definition of Find definitions for: cy•to•tox•ic•i•ty Pronunciation: (sī"tō-tok-sis'i-tē), [key] — n. cell destruction caused by a cytotoxic substance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cytotoxicity (Thesaurus) cytotechnology cytotoxic T cell Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language