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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
Global warming changed the behavior of the jet stream, and a new pattern is now clear: sapping moisture from the West Coast and freezing the East, writes guest columnist Shih-Yu Simon Wang.
City Councilman Jeff Okrepkie lost everything in the 2017 Tubbs wildfire.
—Ryan Fonseca, Los Angeles Times, 15 Jan. 2025
The strong atmospheric currents of the polar jet stream also play a role in the region's weather.
—Samuel Granados, New York Times, 14 Jan. 2025
This is where an area of low pressure gets detached from the jet stream and remains static for a long period, potentially drawing in moist air and subjecting the region beneath to prolonged adverse weather.
—Geraldine Castro, WIRED, 28 Nov. 2024
The flooding occurred after the region was struck by a DANA − a Spanish acronym that refers to a type of storm system that gets cut off from the jet stream and may remain relatively stationary, according to NASA and the European Space Agency.
—Kate S. Petersen, USA TODAY, 12 Nov. 2024
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Word History
First Known Use
1947, in the meaning defined above
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 21 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
Britannica.com: Encyclopedia article about jet stream
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