/ Dictionary / Index C cytost: Meaning and Definition of Find definitions for: cy•tost Pronunciation: (sī'tost), [key] — n. Biochem. any cellular substance liberated because of injury to the cell or cells. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cytosome cytostasis Related Content Daily Word Quiz: rarefied Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language