/ Dictionary / Index C cytolysin: Meaning and Definition of Find definitions for: cy•tol•y•sin Pronunciation: (sī-tol'u-sin, sīt"l-ī'sin), [key] — n. Biochem. any substance that produces cytolysis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cytolysin (Thesaurus) cytology cytolysis Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language