/ Dictionary / Index N nitrogenous: Meaning and Definition of Find definitions for: ni•trog•e•nous Pronunciation: (nī-troj'u-nus), [key] — adj. containing nitrogen. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nitrogenous (Thesaurus) nitrogen narcosis nitrogen tetroxide Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language