upper atmosphere

noun Meteorology.
the portion of the atmosphere above the troposphere.
Compare upper air.


Origin:
1890–95

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To upper atmosphere
Collins
World English Dictionary
upper atmosphere
 
n
meteorol that part of the atmosphere above the troposphere

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
00:10
Upper atmosphere is always a great word to know.
So is doohickey. Does it mean:
a gadget; dingus; thingumbob.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
American Heritage
Science Dictionary
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.
Cite This Source
Example sentences
In addition to weather conditions, the station also monitors cosmic ray
  activity in the upper atmosphere.
The electron column density in a magnetic bubble after a nuclear detonation in
  the upper atmosphere.
In a future hydrogen economy, more hydrogen will escape into the upper
  atmosphere.
Auroras occur when waves of charged particles light up gases in the upper
  atmosphere.
Copyright © 2013 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT