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definitions

wind chill

or wind·chill

[wind-chil, win-]

noun Meteorology.

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. 2019
Science definitions for wind-chill factor

wind-chill factor

The temperature of windless air that would have the same effect on exposed human skin as a particular combination of wind speed and air temperature. As the wind blows faster, heat is lost more quickly from exposed skin, making a person feel colder even though the air temperature remains the same. Also called chill factor
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.