[ aw-roj-uh-nee, oh-roj- ]
/ ɔˈrɒdʒ ə ni, oʊˈrɒdʒ- /

noun Geology.

the process of mountain making or upheaval.

Origin of orogeny

First recorded in 1885–90; oro-1 + -geny
Also called or·o·gen·e·sis [awr-uh-jen-uh-sis, or-uh-] /ˌɔr əˈdʒɛn ə sɪs, ˌɒr ə-/.
Related formsor·o·gen·ic [awr-uh-jen-ik, or-uh-] /ˌɔr əˈdʒɛn ɪk, ˌɒr ə-/, or·o·ge·net·ic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for orogenesis


orogenesis (ˌɒrəʊˈdʒɛnɪsɪs)

/ (ɒˈrɒdʒɪnɪ) /


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 Formsorogenic (ˌɒrəʊˈdʒɛnɪk) or orogenetic (ˌɒrəʊdʒɪˈnɛtɪk), adjectiveorogenically or 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

Word Origin and History for orogenesis



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

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for orogenesis


[ ô-rŏjə-nē ]

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.