pegmatite

noun

peg·​ma·​tite ˈpeg-mə-ˌtīt How to pronounce pegmatite (audio)
: a coarse variety of granite occurring in dikes or veins
pegmatitic
ˌpeg-mə-ˈti-tik How to pronounce pegmatite (audio)
adjective

Word History

Etymology

French, from Greek pēgmat-, pēgma something fastened together, from pēgnynai to fasten together — more at pact

First Known Use

circa 1828, in the meaning defined above

Time Traveler
The first known use of pegmatite was circa 1828

Dictionary Entries Near pegmatite

pegman

pegmatite

pegmatitization

See More Nearby Entries 

Cite this Entry

“Pegmatite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pegmatite. Accessed 28 Nov. 2023.

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Kids Definition

pegmatite

noun
peg·​ma·​tite ˈpeg-mə-ˌtīt How to pronounce pegmatite (audio)
: a grainy variety of granite that occurs in layers in rock

More from Merriam-Webster on pegmatite

Britannica.com: Encyclopedia article about pegmatite

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