/ Dictionary / Index N nitrostarch: Meaning and Definition of Find definitions for: ni•tro•starch Pronunciation: (nī'tru-stärch"), [key] — n. Chem. an orange powder, CHNO, soluble in ethanol, used in explosives. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nitrosourea nitrosyl Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language