Definition of El Niño noun from the Oxford Advanced Learner's Dictionary


El Niño

BrE BrE//ˌel ˈniːnjəʊ//
; NAmE NAmE//ˌel ˈniːnjoʊ//
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a set of changes in the weather system near the coast of northern Peru and Ecuador that happens every few years, causing the surface of the Pacific Ocean there to become warmer and having severe effects on the weather in many parts of the world compare La Niña
See the Oxford Advanced American Dictionary entry: El Niño