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homosphere definition

homo·sphere (hō′mō sfir′)

noun

the lower of two divisions of the earth's atmosphere, extending to a height of c. 70 km (c. 43 mi), characterized by a relatively constant composition of its component gases

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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