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 When strong storms reach the tropopause, their tops flatten out, giving them an anvil-like appearance. Paul Douglas, Star Tribune, 7 July 2021 Above-anvil cirrus plumes form when especially intense updrafts puncture the tropopause and airflow draws cirrus cloud tops into the stratosphere. Paul Douglas, Star Tribune, 7 July 2021 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, 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, 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, 8 Mar. 2019 Reader Vivian Mendenhall pointed out that the tropopause is between the troposphere and the stratosphere. Ned Rozell, Anchorage Daily News, 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, 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 23 Jan. 2022.

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