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Definition of pyroclastic - 2 dictionary results

py⋅ro⋅clas⋅tic

  [pahy-ruh-klas-tik]
Use pyroclastic in a Sentence
–adjective Geology.
composed chiefly of fragments of volcanic origin, as agglomerate, tuff, and certain other rocks; volcaniclastic.
Origin:
1885–90; pyro- + clastic
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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py·ro·clas·tic   (pī'rō-klās'tĭk)   
adj.  Composed chiefly of rock fragments of volcanic origin.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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