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
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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 This is due to the behavior of the jet stream — essentially a river of air that storms flow through — which often shifts north during a La Niña winter. Mary Gilbert, CNN, 15 Oct. 2024 Simon and her team of researchers had Hubble zoom in on the Spot, trapped between two jet streams, to examine its shape, size, and subtle color changes. New Atlas, 11 Oct. 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 16 Nov. 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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!