| 单词 | pyroclastic |
| 释义 | pyroclastic[ pahy-ruh-klas-tik ] / ˌpaɪ rəˈklæs tɪk / adjective Geology.composed chiefly of fragments of volcanic origin, as agglomerate, tuff, and certain other rocks; volcaniclastic. Origin of pyroclasticFirst recorded in 1885–90; pyro- + clastic Words nearby pyroclasticpyroborate, pyrocatechol, pyrocellulose, pyrochemical, pyrochlore, pyroclastic, pyroconductivity, pyrocrystalline, pyroelectric, pyroelectricity, pyrogallate Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for pyroclasticpyroclastic / (ˌpaɪrəʊˈklæstɪk) / adjective(of rocks) formed from the solid fragments ejected during a volcanic eruption Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for pyroclasticpyroclastic [ pī′rō-klăs′tĭk ] Composed chiefly of rock fragments of explosive origin, especially those associated with explosive volcanic eruptions. Volcanic ash, obsidian, and pumice are examples of pyroclastic materials. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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