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[aw-roj-uh-nee, oh-roj-] /ɔˈrɒdʒ ə ni, oʊˈrɒdʒ-/
noun, Geology.
the process of mountain making or upheaval.
Also called orogenesis
[awr-uh-jen-uh-sis, or-uh-] /ˌɔr əˈdʒɛn ə sɪs, ˌɒr ə-/ (Show IPA)
Origin of orogeny
First recorded in 1885-90; oro-1 + -geny
Related forms
[awr-uh-jen-ik, or-uh-] /ˌɔr əˈdʒɛn ɪk, ˌɒr ə-/ (Show IPA),
orogenetic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for orogenesis


the formation of mountain ranges by intense upward displacement of the earth's crust, usually associated with folding, thrust faulting, and other compressional processes
Derived Forms
orogenic (ˌɒrəʊˈdʒɛnɪk), orogenetic (ˌɒrəʊdʒɪˈnɛtɪk) adjective
orogenically, orogenetically, adverb
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
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Word Origin and History for orogenesis



"mountain forming," 1890, from French orogénie; see oro- + -geny. Related: Orogenic.

Online Etymology Dictionary, © 2010 Douglas Harper
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orogenesis in Science
orogeny (ô-rŏj'ə-nē) also orogenesis
The process of mountain formation, especially by folding and faulting of the Earth's crust and by plastic folding, metamorphism, and the intrusion of magmas in the lower parts of the lithosphere. Unlike epeirogeny, orogeny usually affects smaller regions and is associated with evidence of folding and faulting. The long chains of mountains often seen on the edges of continents form through orogeny.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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