[ ney-toh ]

  1. North Atlantic Treaty Organization: a political and military alliance established in 1949 in Washington, D.C., by 12 countries in Europe and North America for the purpose of collective defense against aggression, now comprising 30 member nations: Albania, Belgium, Bulgaria, Canada, Croatia, the Czech Republic, Denmark, Estonia, France, Germany, Greece, Hungary, Iceland, Italy, Latvia, Lithuania, Luxembourg, Montenegro, the Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Turkey, the United Kingdom, and the United States.

Origin of NATO

N(orth) A(tlantic) T(reaty) O(rganization)

Words Nearby NATO Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use NATO in a sentence

  • E chi ne assicura, che il Boccaccio non fosse NATO nella sua villa di Corbignano quivi poco distante?

  • NATO and the international peacekeeping force against an unholy – and, until recently, improbable – alliance.

    After the Rain | Sam Vaknin
  • NATO, struggling to redefine itself and perpetuate its totally superfluous existence.

    After the Rain | Sam Vaknin
  • For it runs as follows: "Africa capta Mundus cum NATO peribit."

    Procopius | Procopius

British Dictionary definitions for NATO



/ (ˈneɪtəʊ) /

n acronym for
  1. North Atlantic Treaty Organization, an international organization composed of the US, Canada, Britain, and a number of European countries: established by the North Atlantic Treaty (1949) for purposes of collective security. In 1994 it launched the Partnership for Peace initiative, in order to forge alliances with former Warsaw Pact countries; in 1997 a treaty of cooperation with Russia was signed and in 1999 Hungary, Poland, and the Czech Republic became full NATO members

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012