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adjective
1.
Biology. breaking up into fragments or separate portions; dividing into parts.
2.
pertaining to an anatomical model made up of detachable pieces.
3.
Geology. noting or pertaining to rock or rocks composed of fragments or particles of older rocks or previously existing solid matter; fragmental.
Origin:
1870–75; < Greek klastós broken in pieces (klas- variant stem of klân to break + -tos verbal adjective suffix) + -ic
1870–75; < Greek klastós broken in pieces (klas- variant stem of klân to break + -tos verbal adjective suffix) + -ic
Related forms
non·clas·tic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Clastic
is always a great word to know.
So is orthogenesis. Does it mean:
| a theory that evolution of a species is due to a predetermined series of alterations intrinsic to the species, not due to natural selection |
| the usual major subdivision of a family or subfamily in the classification of organisms, usually consisting of more than one species |
Collins
World English Dictionary
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
Etymonline
Word Origin & History
clastic
1875, from Gk. klastos "broken," from klan "to break," from PIE *kla-, var. of base *kel- "to strike."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
clastic clas·tic (klās'tĭk)
adj.
Breaking up into pieces or exhibiting a tendency to break or divide.
Separable into parts or having removable sections, as an anatomical model.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
clast  (klāst) Pronunciation Key
A rock fragment or grain resulting from the breakdown of larger rocks. clastic adjective (klās'tĭk) |
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
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