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jet stream
noun
: a long narrow meandering current of high-speed winds near the tropopause blowing from a generally westerly direction and often exceeding a speed of 250 miles (402 kilometers) per hour
Examples of jet stream in a Sentence
Recent Examples on the Web
That shifts the jet streams across the Pacific and North America, affecting weather across the continent.
—Hayleigh Evans, The Arizona Republic, 22 Nov. 2024
That heat is the effect of a jet stream that is unusually far north, in a dynamic that climate change could be worsening.
—Saul Elbein, The Hill, 30 Oct. 2024
How climate change affects the jet stream The jet stream, or any wind, is the result of differences in surface temperature.
—Shuang-Ye Wu, The Conversation, 18 Sep. 2024
The ongoing warmth is due to the position of the jet stream, which has been unusually far north, AccuWeather meteorologist Tom Kines told USA TODAY.
—Doyle Rice, USA TODAY, 23 Oct. 2024
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Word History
First Known Use
1947, in the meaning defined above
Dictionary Entries Near jet stream
Cite this Entry
“Jet stream.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/jet%20stream. Accessed 1 Dec. 2024.
Kids Definition
jet stream
noun
: a long narrow wandering current of high-speed winds blowing from a generally westerly direction several miles above the earth's surface
More from Merriam-Webster on jet stream
Britannica.com: Encyclopedia article about jet stream
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