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
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The jet stream is fueled by temperature differences between the colder polar region to the north and warmer air masses to the south.
—
Denise Chow, NBC news, 26 June 2025
Warmer air over the Pacific follows the jet stream from the northwest to the southeast, dipping down into Texas and the Gulf of Mexico before turning northeast toward the Atlantic Ocean.
—Matthew Adams, Fort Worth Star-Telegram, 20 June 2025
Normally, the jet stream moves in a wave-like pattern.
—Laura Baisas, Popular Science, 19 June 2025
Planetary waves flow across Earth all the time, but sometimes they get amplified, becoming stronger, and the jet stream gets wavier with bigger hills and valleys, Mr. Mann said.
—Seth Borenstein, Christian Science Monitor, 17 June 2025
See All Example Sentences for jet stream
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Denise Chow, NBC news, 26 June 2025
Warmer air over the Pacific follows the jet stream from the northwest to the southeast, dipping down into Texas and the Gulf of Mexico before turning northeast toward the Atlantic Ocean.
—Matthew Adams, Fort Worth Star-Telegram, 20 June 2025
Normally, the jet stream moves in a wave-like pattern.
—Laura Baisas, Popular Science, 19 June 2025
Planetary waves flow across Earth all the time, but sometimes they get amplified, becoming stronger, and the jet stream gets wavier with bigger hills and valleys, Mr. Mann said.
—Seth Borenstein, Christian Science Monitor, 17 June 2025
See All Example Sentences for jet stream
Cite this Entry
“Jet stream.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/jet%20stream. Accessed 9 Jul. 2025.
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