chemosphere

[ kee-muh-sfeer, kem-uh- ]
/ ˈki məˌsfɪər, ˈkɛm ə- /

noun

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

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

Words nearby chemosphere

chemosensory, chemoserotherapy, chemosh, chemosis, chemosmosis, chemosphere, chemostat, chemosterilant, chemosterilize, chemosurgery, chemosynthesis

British Dictionary definitions for chemosphere

chemosphere
/ (ˈkɛməˌsfɪə) /

noun

meteorol a rare name for thermosphere

Derived forms of chemosphere

chemospheric (ˌkɛməˈsfɛrɪk), adjective