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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. meteorol a rare name for thermosphere
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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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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chemosmosischemostat