tro·​po·​pause | \ ˈtrō-pə-ˌpȯz How to pronounce tropopause (audio) , ˈträ- \

Definition of tropopause

: the region at the top of the troposphere also : a comparable layer of a celestial body

Examples of tropopause in a Sentence

Recent Examples on the Web This calmness, though, helped doomed all those species 250 million years ago: Explosive volcanic eruptions in Siberia punched through the tropopause and deposited great burps of carbon into the stratosphere. Matt Simon, Wired, "The Epic Siberian Journey to Solve a Mass Extinction Mystery," 6 July 2020 Heat and humidity are high enough to allow the clouds to form and the tropopause—the boundary between the troposphere and stratosphere—is about 10 miles up, giving large storms plenty of room to form. Jason Daley, Smithsonian, "Rare Lightning Strikes Detected 300 Miles From North Pole," 14 Aug. 2019 Jet streams travel in the tropopause—the area between the troposphere and the stratosphere—at heights of about 8 to 15 kilometers (5 to 9 miles). Christina Nunez, National Geographic, "The jet stream, explained," 8 Mar. 2019 Reader Vivian Mendenhall pointed out that the tropopause is between the troposphere and the stratosphere. Ned Rozell, Anchorage Daily News, "Chasing the sun from New York to Alaska on a plane," 19 May 2018 The tropopause fluctuates between about 6 and 11 miles above the earth’s surface (at an altitude north of 30,000 feet), where an abrupt change in air temperature occurs. Tyler Moss, CNT, "Why It's Faster to Fly East," 17 July 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tropopause.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of tropopause

1918, in the meaning defined above

History and Etymology for tropopause

tropo- (in troposphere + pause entry 1

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Time Traveler for tropopause

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The first known use of tropopause was in 1918

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Cite this Entry

“Tropopause.” Dictionary, Merriam-Webster, Accessed 19 Jan. 2021.

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