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ther·mo·sphere | \ ˈthər-mə-ˌsfir 
\
\Definition of thermosphere
: the part of the earth's atmosphere that begins at about 50 miles (80 kilometers) above the earth's surface, extends to outer space, and is characterized by steadily increasing temperature with height
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Other Words from thermosphere
thermospheric \ ˌthər-mə-ˈsfir-ik , -ˈsfer- \ adjective
, -ˈsfer- \ adjectiveKeep scrolling for more
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The first known use of thermosphere was circa 1950
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