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 sweeps WASP-127b’s equator at over 20,000 miles per hour. Paul Smaglik, Discover Magazine, 22 Jan. 2025 The jet stream typically acts as a barrier to keep the polar vortex contained near the Arctic, but at times, some of the vortex can break off or move south, bringing unusually cold weather into the U.S., Europe and Asia. Janet Loehrke, USA TODAY, 22 Jan. 2025 Due to La Nina conditions in the Pacific Ocean, the jet stream is buckled to the north and all the rain storms are being steered away from southern California. Max Golembo, ABC News, 15 Jan. 2025 The same plunging jet stream is the primary cause of the current major winter storm. Jim Foerster, Forbes, 10 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 2 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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