tholeiite

noun
tho·​lei·​ite | \ ˈtō-lə-ˌīt How to pronounce tholeiite (audio) , ˈthō- How to pronounce tholeiite (audio) \

Definition of tholeiite

: a basaltic rock that is rich in aluminum and low in potassium, is found typically in the ocean floor, and is probably derived from the earth's mantle

Other Words from tholeiite

tholeiitic \ ˌtō-​lə-​ˈi-​tik How to pronounce tholeiite (audio) , ˌthō-​ \ adjective

First Known Use of tholeiite

1866, in the meaning defined above

History and Etymology for tholeiite

German Tholeiit, from Tholey, village in Saarland, Germany + German -it -ite

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The first known use of tholeiite was in 1866

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Cite this Entry

“Tholeiite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tholeiite. Accessed 6 May. 2021.

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Britannica.com: Encyclopedia article about tholeiite

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