North Atlantic Treaty Organization, an international organization composed of the US, Canada, Britain, Turkey, and most European countries: established by the North Atlantic Treaty (1949) for purposes of collective security
WordReference Random House Learner's Dictionary of American English © 2026
NATO /ˈneɪtoʊ/USA pronunciation
n. [proper noun* no article]
WordReference Random House Unabridged Dictionary of American English © 2026- GovernmentNorth American Treaty Organization.
NATO
(nā′tō),USA pronunciation n.
- Governmentan organization formed in Washington, D.C. (1949), comprising the 12 nations of the Atlantic Pact together with Greece, Turkey, and the Federal Republic of Germany, for the purpose of collective defense against aggression.
- north, northern(orth) A(tlantic) T(reaty) O(rganization)
Collins Concise English Dictionary © HarperCollins Publishers::
'NATO' also found in these entries (note: many are not synonyms or translations):
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- inclinatory
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