say it: NAY-toh
nato is a noun meaning "an international organization created in 1949 by the North Atlantic Treaty for purposes of collective security". It carries one recorded sense.
an international organization created in 1949 by the North Atlantic Treaty for purposes of collective security
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for nato come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.