the mesosphere
noun/ðə ˈmezəsfɪə(r)/, /ðə ˈmiːzəsfɪə(r)/
/ðə ˈmezəsfɪr/, /ðə ˈmiːzəsfɪr/
[singular]- the part of the earth’s atmosphere that is between 50 and 80 kilometres from the ground, between the stratosphere and the thermosphereTopics Spacec2
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the mesosphere