pyroclastic Hear it!

pyroclastic definition

pyro·clas·tic (pī′rə klas′tik)

adjective

of or having to do with rocks formed from material that was explosively ejected from a volcano

Etymology: pyro- + clastic

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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