from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The process of mountain formation, especially by a folding and faulting of the earth's crust.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. the process of mountain building by the upward folding of the Earth's crust.
from The Century Dictionary and Cyclopedia
- n. Same as orogenesis.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the process of mountain formation (especially by the upward displacement of the earth's crust)
From oro- + -geny. (Wiktionary)