/ Dictionary / Index N nonnuclear: Meaning and Definition of Find definitions for: non•nu•clear Pronunciation: (non-n'klē-ur, -ny'- or, by metathesis, -kyu-lur), [key] — adj. not utilizing nuclear power, nuclear weapons, etc.: to fight a nonnuclear war. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nonnitrogenous nonny-nonny Related Content Daily Word Quiz: hale Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language