pegmatitic

Variant of pegmatite

pegmatite definition

peg·ma·tite (peg′mə tīt′)

noun

a light-colored, coarsegrained, intrusive igneous rock, usually granitic, containing large crystals of quartz, feldspar, and mica, and sometimes rare minerals: typically found in fissures of other igneous rocks

Etymology: < Gr pēgma (gen. pēgmatos), a framework, something fastened together (< IE base *paĝ-: see fang) + -ite: from its texture

Related Forms:

  • pegmatitic peg′·ma·tit′ic (-tit′ik) adjective

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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