cordierite Hear it!

cordierite definition

cor·di·er·ite (kôr′dē ər īt′)

noun

a bluish, very hard, pleochroic, crystalline mineral, magnesium aluminum silicate, (Mg,Fe) AlSiO, used sometimes as a gem

Etymology: after P. L. A. Cordier (1777-1861), Fr geologist + -ite

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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