pyroclastic
Use Pyroclastic in a sentence
rəˈklæs adjective Geology.
composed chiefly of fragments of volcanic origin, as agglomerate, tuff, and certain other rocks; volcaniclastic.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To pyroclastic
Collins
World English Dictionary
pyroclastic (ˌpaɪrəʊˈklæstɪk) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —adj | |
| (of rocks) formed from the solid fragments ejected during a volcanic eruption | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
00:10
Pyroclastic
is always a great word to know.
So is quincunx. Does it mean:
| a chattering or flighty, light-headed person. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
American Heritage
Science Dictionary
| pyroclastic (pī'rō-klās'tĭk) Pronunciation Key
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 © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
Gases, lava, and pyroclastic material are erupted from volcanic vents.
The outer flanks of the asymmetrical pyroclastic shield volcano are formed by thick pyroclastic-flow deposits.
Above this coarse pumice-fall layer, layers of pyroclastic flow and tephra fall deposits record changes in the eruption.
Lower-density pyroclastic flows, called pyroclastic surges, can easily overflow ridges hundreds of feet high.
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