The stratosphere is a layer of the atmosphere between the troposphere and the mesosphere, or the highest level of a profession.(noun)
See stratosphere in Webster's New World College Dictionary
Origin: Fr stratosphère < ModL stratum, stratum + Fr sphère, sphere
See stratosphere in American Heritage Dictionary 4
Origin: French stratosphère
Origin: : Latin strātus, a spreading out; see stratus
Origin: + -sphère, sphere (from Old French espere; see sphere).
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