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polar vortex

[ poh-ler vawr-teks ]
/ ˈpoʊ lər ˈvɔr tɛks /
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noun plural po·lar vor·ti·ces [poh-ler vawr-tuh-seez] /ˈpoʊ lər ˈvɔr təˌsiz/ po·lar vor·tex·es
a whirling mass of very cold air that sits over the North or South Pole: A displaced polar vortex is causing Arctic temperatures across the United States.
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Origin of polar vortex

First recorded in 1910–15
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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