Dictionary

windchill

noun wind·chill \ˈwin(d)-ˌchil\

: the effect that wind has of making air feel colder than it actually is

: a temperature that shows how cold the air feels because of the wind

Full Definition of WINDCHILL

:  a still-air temperature that would have the same cooling effect on exposed human skin as a given combination of temperature and wind speed —called also chill factor, windchill factor, windchill index
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First Known Use of WINDCHILL

1939
Medical Dictionary

windchill

noun wind·chill \ˈwin(d)-ˌchil\

Medical Definition of WINDCHILL

:  a still-air temperature that would have the same cooling effect on exposed human flesh as a given combination of temperature and wind speed—called also chill factor, windchill factor, windchill index

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