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See more synonyms for SEATO on Thesaurus.com
  1. an organization formed in Manila (1954), comprising Australia, Great Britain, France, New Zealand, Pakistan, the Philippines, Thailand, and the United States, for collective defense against aggression in southeastern Asia and the southwestern Pacific: abolished in 1977.
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Origin of SEATO

S(outh)e(ast) A(sia) T(reaty) O(rganization)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Word Origin and History for seato


1954, acronym for Southeast Asia Treaty Organization.

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Online Etymology Dictionary, © 2010 Douglas Harper