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English definition of “El Niño”

El Niño

noun [U] uk   /elˈniːn.jəʊ/ us    /-joʊ/
an unusual ocean current that happens along the western coast of South America every two to ten years, killing large numbers of sea creatures and causing noticeable and often severe changes in weather conditions in many areas of the world: the El Niño weather pattern/system/phenomenon Rains came late to the region because of El Niño.
(Definition of El Niño from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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