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.

Origin of chemosphere

1
First recorded in 1945–50; chemo- + -sphere

Words Nearby chemosphere

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

British Dictionary definitions for chemosphere

chemosphere

/ (ˈkɛməˌsfɪə) /


noun
  1. meteorol a rare name for thermosphere

Derived forms of chemosphere

  • chemospheric (ˌkɛməˈsfɛrɪk), adjective

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