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.
The jet stream dipping over the Eastern US and high pressure east of Bermuda will both draw these systems generally northward. Chris Dolce, CNN Money, 24 Sep. 2025 How much cold actually reaches Tennessee or other parts of the country depends on other atmospheric patterns, like the jet stream and storm systems. Brandi D. Addison, Nashville Tennessean, 24 Sep. 2025 In the East, the northern branch of the jet stream tends to carry faster-moving, less intense storms, which can mean snowfall near or even below average, with temperatures closer to seasonal norms, AccuWeather said. Doyle Rice, USA Today, 16 Sep. 2025 Only Iceland, which is isolated from the jet stream, has unique populations of the bacteria, Morris said. Katherine Bourzac, Quanta Magazine, 15 Sep. 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

Browse Nearby Words

Cite this Entry

“Jet stream.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/jet%20stream. Accessed 28 Sep. 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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