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1. (n.) pegmatite
a coarsely crystalline granite or other high-silica rock occurring in veins or dikes.
Etymology: (1825–35; < Gk pēgmat- (s. of pêgma) anything fastened together, a bond (cf. pēgnýein to stick) + -ite1)
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| Definition of 'pegmatite' |
Princeton's WordNet |
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1. (noun) pegmatite
a form of igneous rock consisting of extremely coarse granite resulting from the crystallization of magma rich in rare elements
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| Definition of 'pegmatite' |
Webster Dictionary |
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1. (noun) pegmatite
graphic granite. See under Granite
2. (noun) pegmatite
more generally, a coarse granite occurring as vein material in other rocks
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Definitions of pegmatite 
