noun lith·o·sphere \ˈli-thə-ˌsfir\

Definition of LITHOSPHERE

:  the solid part of a celestial body (as the earth); specifically :  the outer part of the solid earth composed of rock essentially like that exposed at the surface, consisting of the crust and outermost layer of the mantle, and usually considered to be about 60 miles (100 kilometers) in thickness
lith·o·spher·ic \ˌli-thə-ˈsfir-ik, -ˈsfer-\ adjective


International Scientific Vocabulary
First Known Use: 1887


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May 28, 2015
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