/ Dictionary / Index A amidine: Meaning and Definition of Find definitions for: am•i•dine Pronunciation: (am'i-dēn", -din), [key] — n. Chem. any of a group of compounds containing the CNH group, some of which have marked pharmacological action. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. amidin amidinohydrazone Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language