/ Dictionary / Index C cryogen: Meaning and Definition of Find definitions for: cry•o•gen Pronunciation: (krī'u-jun, -jen"), [key] — n. a substance for producing low temperatures; freezing mixture. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cryogen (Thesaurus) cryoextraction cryogenic Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language