/ Dictionary / Index D DMN: Meaning and Definition of Find definitions for: DMN Pronunciation: [key] — Chem. Chem. dimethylnitrosamine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. D.M.L. D.M.S. Related Content Daily Word Quiz: penurious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language