/ Dictionary / Index C cyclopentane: Meaning and Definition of Find definitions for: cy•clo•pen•tane Pronunciation: (sī"klu-pen'tān, sik"lu-), [key] — n. a colorless, water-insoluble liquid, CH, obtained from petroleum and used chiefly as a solvent. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cyclopentadiene cyclophosphamide 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