mesopause
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See also: mésopause
English
Etymology
From meso- (“middle”) + -pause (“boundary”).
Noun
mesopause (plural mesopauses)
- (meteorology) In the atmosphere, the boundary between the mesosphere and the thermosphere or ionosphere. It is the atmospheric boundary where the temperature reaches its minimum value.
Usage notes
The mesopause commonly lies between 80 and 90 km (50-55 mi) above sea level (ASL)