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
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Another surprise came via the detection of titanium on Tylos, just beneath the jet stream. Matt Robison, Newsweek, 18 Feb. 2025 Meteorologists attribute this active pattern to the positioning of the jet stream, which is funneling storms across the northern US. Artemis Moshtaghian, CNN, 8 Feb. 2025 This particular storm is hitching a ride on the jet stream that supercharges it. Megan Forrester, ABC News, 24 Jan. 2025 This cooling strengthens the polar jet stream and shifts it northward, leading to distinct winter weather patterns across the United States. Jim Foerster, Forbes, 23 Jan. 2025 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 26 Feb. 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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