me·so·pause | \ ˈme-zə-ˌpȯz 
, ˈmē-, -sə- \
, ˈmē-, -sə- \Definition of mesopause
: the upper boundary of the mesosphere where the temperature of the atmosphere reaches its lowest point
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Time Traveler for mesopause
The first known use of mesopause was in 1950
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