/ Dictionary / Index S subnitrate: Meaning and Definition of Find definitions for: sub•ni•trate Pronunciation: (sub-nī'trāt), [key] — n. Chem. a basic salt of nitric acid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subnet subnormal Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language