/ Dictionary / Index D diphenylamine: Meaning and Definition of Find definitions for: di•phen•yl•a•mine Pronunciation: (dī-fen"l-u-mēn', -am'in, -fēn"-), [key] — n. Chem. a colorless, crystalline, slightly water-soluble benzene derivative, CHN, used chiefly in the preparation of various dyes, as a stabilizer for nitrocellulose propellants, and for the detection of oxidizing agents in analytical chemistry. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diphenylacetylene diphenylaminechlorarsine 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