anorthosite

noun
an·​or·​tho·​site | \ ə-ˈnȯr-thə-ˌsīt How to pronounce anorthosite (audio) \

Definition of anorthosite

: a granular plutonic igneous rock composed almost exclusively of a soda-lime feldspar (such as labradorite)

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Other Words from anorthosite

anorthositic \ ə-​ˌnȯr-​thə-​ˈsi-​tik How to pronounce anorthositic (audio) \ adjective

Examples of anorthosite in a Sentence

Recent Examples on the Web The chunks of anorthosite weren’t deposited there by nature — they were trucked in from the mountains around Pasadena. Los Angeles Times, "How NASA’s Apollo program turned military test pilots into lunar geologists," 19 July 2019 The chunks of anorthosite weren’t deposited there by nature — they were trucked in from the mountains around Pasadena. Los Angeles Times, "How NASA’s Apollo program turned military test pilots into lunar geologists," 19 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'anorthosite.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of anorthosite

1863, in the meaning defined above

History and Etymology for anorthosite

French anorthose, a feldspar, from a- + Greek orthos — more at orth-

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Time Traveler for anorthosite

Time Traveler

The first known use of anorthosite was in 1863

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Statistics for anorthosite

Cite this Entry

“Anorthosite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/anorthosite. Accessed 11 Aug. 2020.

More from Merriam-Webster on anorthosite

Britannica.com: Encyclopedia article about anorthosite

Comments on anorthosite

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