conchoidal Hear it!

conchoidal definition

con·choi·dal (käŋ ko̵id′'l)

adjective

Mineralogy producing smooth convexities or concavities, like those of a clamshell, when fractured: said of a brittle substance

Etymology: < Gr konchoeidēs (see conchoid) + -al

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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