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thermosphere: Meaning and Definition of

ther•mo•sphere

Pronunciation: (thûr'mu-sfēr"), [key]
— n.
  1. the region of the upper atmosphere in which temperature increases continuously with altitude, encompassing essentially all of the atmosphere above the mesosphere.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
thermosiphon thermostable
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