/ Dictionary / Index N NG: Meaning and Definition of Find definitions for: NG Pronunciation: [key] nitroglycerin. nasogastric. ng Pronunciation: [key] nanogram; nanograms. N.G. Pronunciation: [key] National Guard. New Guinea. no good. n.g. Pronunciation: [key] no good. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ng (Thesaurus) NFS Ngadju Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language