Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Thermosphere" Definition
noun
The outermost shell of the atmosphere, between the mesosphere and outer space, where temperatures increase steadily with altitude.
Source: American Heritage Dictionary
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.
Source: Merriam-Webster
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