Dictionary

thermosphere

thermosphere

noun 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
ther·mo·spher·ic \ˌthər-mə-ˈsfir-ik, -ˈsfer-\ adjective

Origin of THERMOSPHERE

International Scientific Vocabulary
First Known Use: circa 1950

Browse

Next Word in the Dictionary: thermostablePrevious Word in the Dictionary: thermosiphonAll Words Near: thermosphere
March 02, 2015
chatoyant Hear it
Having a changeable luster or color
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears