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mesopause

[ mez-uh-pawz, mes-, mee-zuh-, -suh- ]

noun

, Meteorology.
  1. the boundary or transition zone between the mesosphere and the ionosphere. Compare mesosphere ( def 1 ).
  2. the top of the mesosphere, determined by the appearance of a temperature minimum near an altitude of 50 miles (80 km). Compare mesosphere ( def 2 ).


mesopause

/ ˈmɛsəʊˌpɔːz /

noun

  1. meteorol the zone of minimum temperature between the mesosphere and the thermosphere


mesopause

/ mĕzə-pôz′ /

  1. The boundary between the upper mesosphere and the lower thermosphere , approximately 80 km (50 mi) above the Earth's surface. It is the site of the coldest temperatures in the Earth's atmosphere, with temperatures of −100°C (−148°F).


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Word History and Origins

Origin of mesopause1

First recorded in 1945–50; meso- + pause
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Example Sentences

The line marking the top of the mesosphere is called, you guessed it, the mesopause.

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mesonephrosmesopeak