[aw-roj-uh-nee, oh-roj-]
noun Geology.
the process of mountain making or upheaval.
Also called orogenesis [awr-uh-jen-uh-sis, or-uh-] .

1885–90; oro-1 + -geny

orogenic [awr-uh-jen-ik, or-uh-] , orogenetic, adjective
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World English Dictionary
orogeny or orogenesis (ɒˈrɒdʒɪnɪ, ˌɒrəʊˈdʒɛnɪsɪs)
the formation of mountain ranges by intense upward displacement of the earth's crust, usually associated with folding, thrust faulting, and other compressional processes
orogenesis or orogenesis
orogenic or orogenesis
orogenetic or orogenesis
oro'genically or orogenesis
oroge'netically or orogenesis

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

"mountain forming," 1890, from Fr. orogénie; from oro- + + Fr. -gène "something that produces" (from Gk. -genes "formation, creation;" see genus).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
orogeny (ô-rŏj'ə-nē) also orogenesis   (ô-rŏj'ə-nē)  Pronunciation Key 
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
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