/ Dictionary / Index N NB: Meaning and Definition of Find definitions for: NB Pronunciation: [key] New Brunswick, Canada (approved for postal use). See Nb Pronunciation: [key] — Symbol, Chem. niobium. N.B. Pronunciation: [key] New Brunswick. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nb (Thesaurus) Nazism NBA Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language