1

pegmatoid

adjective peg·ma·toid \ -ˌtȯid \

Definition of pegmatoid

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Origin and Etymology of pegmatoid

pegmatite + -oid


2

pegmatoid

noun \ " \

Definition of pegmatoid

plural -s
1 : a pegmatite containing a feldspathoid as an essential constituent
2 : a coarse-grained pegmatite of normal habit as distinguished from graphic granite

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