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A.Word.A.Day--lithosphere

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This week's theme: words to describe the Earth's features.

lithosphere (LITH-uh-sfeer) noun

The solid outer portion of the Earth consisting of the crust and upper mantle, approximately 100 km (62 miles) thick.

[From litho- (stone) + -sphere.]

See more usage examples of lithosphere in Vocabulary.com's dictionary.

-Anu Garg (garg AT wordsmith.org)

"The relatively cold temperatures of the old, thick lithosphere beneath southern Africa and the Northwest Territories of Canada are prime locations where diamonds are mined." J. Hope Babowice; Diamonds Reflect Elements of Our Solar System; Chicago Daily Herald; Oct 30, 2002.

X-Bonus

Neither a man nor a crowd nor a nation can be trusted to act humanely or to think sanely under the influence of a great fear. -Bertrand Russell, philosopher, mathematician, author, Nobel laureate (1872-1970)

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