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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Distortions in the jet stream will allow the cold air to stagnate and linger over much of the Eastern United States. Elizabeth Both, NBC News, 2 Jan. 2025 This outbreak follows severe weather earlier this week in Texas, and is the result of a deep dip, or trough, in the jet stream that is pulling moisture from the Gulf of Mexico northward. Andrew Freedman, Axios, 28 Dec. 2024 Turbulence is the result of air moving in unusual or unexpected ways and can be caused by anything from thunderstorms to air moving up and around mountains to another aircraft’s jet stream. Alison Fox, Travel + Leisure, 2 Dec. 2024 One is the weakening of the jet stream, which is being induced by climate change, facilitating the descent of cold air from polar regions. Geraldine Castro, WIRED, 28 Nov. 2024 See all Example Sentences for jet stream 

Word History

First Known Use

1947, in the meaning defined above

Time Traveler
The first known use of jet stream was in 1947

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 8 Jan. 2025.

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

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