/ Dictionary / Index C cycloheximide: Meaning and Definition of Find definitions for: cy•clo•hex•i•mide Pronunciation: (sī"klō-hek'su-mīd", -mid), [key] — n. Pharm. an antibiotic substance, CHNO, isolated from the bacterium Streptomyces griseus, used experimentally to block protein synthesis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cyclohexanone cyclohexylamine Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language