noun tro·po·sphere \ˈtrō-pə-ˌsfir, ˈträ-\

Definition of troposphere

  1. :  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


play \ˌtrō-pə-ˈsfir-ik, ˌträ-, -ˈsfer-\ adjective

Origin and Etymology of troposphere

International Scientific Vocabulary

First Known Use: 1908

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