peridotite

noun
pe·​ri·​do·​tite | \pə-ˈri-də-ˌtīt \

Definition of peridotite 

: any of a group of granular igneous rocks composed of ferromagnesian minerals and especially olivine

Other Words from peridotite

peridotitic \pə-​ˌri-​də-​ˈti-​tik \ adjective

First Known Use of peridotite

1882, in the meaning defined above

History and Etymology for peridotite

French péridotite, from péridot

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The first known use of peridotite was in 1882

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Britannica.com: Encyclopedia article about peridotite

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