/ Dictionary / Index N North Atlantic Treaty: Meaning and Definition of Find definitions for: North' Atlan'tic Trea'ty Pronunciation: [key] the treaty (1949) signed by 12 countries, providing for the establishment of NATO. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. North Atlantic Current North Atlantic Treaty Organization 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