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wind chill

or wind·chill

[wind-chil, win-]
noun Meteorology.
  1. the apparent temperature felt on the exposed human body owing to the combination of temperature and wind speed.
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Origin of wind chill

First recorded in 1945–50
Also called wind·chill factor [wind-chil, win-,] /ˈwɪndˌtʃɪl ˌfæk tər, ˈwɪn-,/ wind·chill in·dex [wind-chil in-deks, win-] /ˈwɪndˌtʃɪl ˌɪn dɛks, ˈwɪn-/, chill factor.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for wind-chill

wind-chill

noun
    1. the serious chilling effect of wind and low temperature: it is measured on a scale that runs from hot to fatal to life and allows for varying combinations of air temperature and wind speed
    2. (as modifier)wind-chill factor
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012