noun \-ˌsfir\

Definition of MESOSPHERE

:  the part of the earth's atmosphere between the stratosphere and the thermosphere in which temperature decreases with altitude to the atmosphere's absolute minimum
me·so·spher·ic \ˌme-zə-ˈsfir-ik, ˌmē-, -sə-, -ˈsfer-\ adjective

First Known Use of MESOSPHERE



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