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upper atmosphere

noun, Meteorology.
the portion of the atmosphere above the troposphere.
Compare upper air.
Origin of upper atmosphere
First recorded in 1890-95 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for upper atmosphere
Historical Examples
  • The lightning in the upper atmosphere burns the gases in its path.

    Motors James Slough Zerbe
  • They were hovering in Earth's upper atmosphere, at the permitted limit.

    The Ethical Way Joseph Farrell
  • Because we are leaving one of the undiscovered conditions of the upper atmosphere that disturbs the sunlight.

  • Not impossibly the process of the earth's upper atmosphere in maintaining a terrestrial equilibrium may afford some clue.

    Astronomy David Todd
  • Second, the upper atmosphere of Eisberg was pretty much pure hydrogen, which is somewhat easier to ionize than oxygen or nitrogen.

    Unwise Child Gordon Randall Garrett
  • Meeting the rarefied gases of the earth's upper atmosphere, they illuminate them as electric discharges illuminate a vacuum tube.

    Astronomy for Young Folks Isabel Martin Lewis
  • They tell us that it is caused by the arrest of the energy of the sunbeam by the clouds and vapor in the upper atmosphere.

  • Or had the Throgs tried to blast the Terran ship in the upper atmosphere, crippling it, making this a forced landing?

    Storm Over Warlock Andre Norton
  • Would she sail through the upper atmosphere—or come down like a stone?

  • Clear and dry though the air is, the blue of the skies is pale owing to a light dust haze in the upper atmosphere.

British Dictionary definitions for upper atmosphere

upper atmosphere

(meteorol) that part of the atmosphere above the troposphere
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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upper atmosphere in Science
upper atmosphere  
The part of the atmosphere above the troposphere. The upper atmosphere includes the mesosphere, the ionosphere, the thermosphere, and the exosphere. Temperatures in the upper atmosphere decrease with increasing altitude except in the thermosphere, where temperatures increase significantly with altitude, because the few molecules present receive intense solar radiation.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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