pegmatoid

adjective
peg·​ma·​toid | \ -ˌtȯid\

Definition of pegmatoid

 (Entry 1 of 2)

pegmatoid

noun
\ "\
plural -s

Definition of pegmatoid (Entry 2 of 2)

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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History and Etymology for pegmatoid

Adjective

pegmatite + -oid

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