/ Dictionary / Index C cyclophosphamide: Meaning and Definition of Find definitions for: cy•clo•phos•pha•mide Pronunciation: (sī"klu-fos'fu-mīd", -mid, sik"lu-), [key] — n. Pharm. a synthetic, crystalline, toxic substance, CHClNOP, related to nitrogen mustard, used in the treatment of Hodgkin's disease, lymphoma, and certain leukemias. Abbr.: CYC Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cyclopentane cyclopia Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language