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uniformitarianism

 - 3 dictionary results

u⋅ni⋅form⋅i⋅tar⋅i⋅an

[yoo-nuh-fawr-mi-tair-ee-uhn]
–adjective
1. supporting, conforming to, or derived from a theory or doctrine about uniformity, esp. on the subject of geology.
2. Geology. of or pertaining to the thesis that processes that operated in the remote geological past are not different from those observed now.
–noun
3. a person who accepts or supports a uniformitarian theory.

Origin:
1830–40; uniformit(y) + -arian


u⋅ni⋅form⋅i⋅tar⋅i⋅an⋅ism, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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u·ni·for·mi·tar·i·an·ism   (yōō'nə-fôr'mĭ-târ'ē-ə-nĭz'əm)   
n.  The theory that all geologic phenomena may be explained as the result of existing forces having operated uniformly from the origin of the earth to the present time.
u'ni·for'mi·tar'i·an adj. & n.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Science Dictionary
uniformitarianism   (y'nə-fôr'mĭ-târ'ē-ə-nĭz'əm)  Pronunciation Key 
The theory that all geologic phenomena may be explained as the result of existing forces having operated uniformly from the origin of the Earth to the present time. See Note at Lyell.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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