chemosphere Hear it!

chemosphere definition

chemo·sphere (kem′ə sfir′, kē′mə-)

noun

an atmospheric zone about 19 to 80 km (11.8 to 49.7 mi) above the earth's surface, in which photochemical reactions take place

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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