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windchill
noun
wind·chill
ˈwin(d)-ˌchil
: 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
Examples of windchill in a Sentence
It's cold outside, and it feels even colder because of the windchill.
Expect windchills in the 20s tonight.
Recent Examples on the Web
Tuesday night temperatures are expected to drop to about 8 degrees with windchills of about negative 4 with wind gusts around 15 mph.
—Deanese Williams-Harris, Chicago Tribune, 14 Jan. 2025
It has traditionally been applied to tornado events but has also been used for flash floods, thunderstorms, windchill, and fire weather.
—Chad De Guzman, TIME, 13 Jan. 2025
When her body was discovered Monday, temperatures in Kansas City were hovering around 12 degrees, with a 1 degree windchill.
—Ilana Arougheti, Kansas City Star, 7 Jan. 2025
Single-digit windchills are possible on Thursday and Friday, along with potential negative single-digit windchills at some points over the weekend.
—Claire Reid, Journal Sentinel, 31 Dec. 2024
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Word History
First Known Use
1939, in the meaning defined above
Dictionary Entries Near windchill
Cite this Entry
“Windchill.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/windchill. Accessed 18 Jan. 2025.
Kids Definition
windchill
noun
wind·chill
-ˌchil
: 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 windchill factor, windchill index
Medical Definition
windchill
noun
wind·chill
ˈwin(d)-ˌchil
: 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
More from Merriam-Webster on windchill
Britannica.com: Encyclopedia article about windchill
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