/ Dictionary / Index C cyanoguanidine: Meaning and Definition of Find definitions for: cy•a•no•guan•i•dine Pronunciation: (sī"u-nō-gwä'ni-dēn", -din, sī-an"ō-), [key] — n. Chem. dicyandiamide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cyano group cyanohydrin 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