troposphere

noun
tro·​po·​sphere | \ ˈtrō-pə-ˌsfir How to pronounce troposphere (audio) , ˈträ-\

Definition of troposphere

: the lowest densest part of the earth's atmosphere in which most weather changes occur and temperature generally decreases rapidly with altitude and which extends from the earth's surface to the bottom of the stratosphere at about 7 miles (11 kilometers) high

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Other Words from troposphere

tropospheric \ ˌtrō-​pə-​ˈsfir-​ik How to pronounce tropospheric (audio) , ˌträ-​ , -​ˈsfer-​ \ adjective

Examples of troposphere in a Sentence

Recent Examples on the Web

One happens in the troposphere, the lowest layer of the earth’s atmosphere, while another happens higher up in the stratosphere. David Grossman, Popular Mechanics, "What Is a Polar Vortex? The Frigid Weather Pattern Explained," 16 Jan. 2019 The polar vortices found in the troposphere are generally much larger than the ones in the stratosphere and are usually the ones that effect weather down on the ground, chilling our bones here on the planet's surface. David Grossman, Popular Mechanics, "What Is a Polar Vortex? The Frigid Weather Pattern Explained," 16 Jan. 2019 Some species were found year round, and some of these core group were found in the upper troposphere above the Caribbean Sea as well. Diana Gitig, Ars Technica, "Ahh, summer—ramlibacter season," 14 Nov. 2018 One record covers the lower troposphere—the first 10 kilometers above the Earth’s surface. Scott K. Johnson, Ars Technica, "“Fingerprint” of humanity’s climate impact seen in the seasons," 19 July 2018 One key appears to be the difference between surface air temperatures and air temperatures much higher up at the top of the troposphere at altitudes where thunderclouds smooth out into anvils. Eric Limer, Popular Mechanics, "How Many Hurricanes Can There Be at Once?," 10 Sep. 2018 One key appears to be the difference between surface air temperatures and air temperatures much higher up at the top of the troposphere at altitudes where thunderclouds smooth out into anvils. Eric Limer, Popular Mechanics, "How Many Hurricanes Can There Be at Once?," 10 Sep. 2018 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 Take a one-meter-by-one-meter square air column, from the ground to the top of the troposphere, and condense all the water vapor. Jeff Halverson, Washington Post, "The second 1,000-year rainstorm in two years engulfed Ellicott City. Here’s how it happened.," 28 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'troposphere.' 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 troposphere

1908, in the meaning defined above

History and Etymology for troposphere

International Scientific Vocabulary

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Last Updated

19 Feb 2019

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Time Traveler for troposphere

The first known use of troposphere was in 1908

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More from Merriam-Webster on troposphere

Rhyming Dictionary: Words that rhyme with troposphere

Britannica.com: Encyclopedia article about troposphere

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