/ Dictionary / Index N nitroso: Meaning and Definition of Find definitions for: ni•tro•so Pronunciation: (nī-trō'sō), [key] — adj. Chem. (esp. of organic compounds) containing the nitroso group; nitrosyl. nitroso- Pronunciation: [key] a combining form of the nitroso group: nitrosobenzene. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nitrosamine nitrosobenzene Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language