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chemosphere

[ kee-muh-sfeer, kem-uh- ]

noun

  1. the region of the atmosphere most characterized by chemical, especially photochemical, activity, starting in the stratosphere and including the mesosphere and perhaps part of the thermosphere.

chemosphere

/ ˈkɛməˌsfɪə; ˌkɛməˈsfɛrɪk /

noun

  1. See thermosphere
    meteorol a rare name for thermosphere

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Derived Forms

  • chemospheric, adjective

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Word History and Origins

Origin of chemosphere1

First recorded in 1945–50; chemo- + -sphere

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