/ Dictionary / Index D diamine: Meaning and Definition of Find definitions for: di•am•ine Pronunciation: (dī'u-mēn", dī-am'in), [key] — n. Chem. a compound containing two amino groups. hydrazine (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: diamine (Thesaurus) diamide diammonium phosphate Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language