Definition of "orogeny" [orogeny]

• The process of mountain formation, especially by a folding and faulting of the earth's crust. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "An extra 10 points to Damian in that piece for using the word "orogeny", which I'm embarrassed to say"
• "Scientist said that Halong bay has experienced at least 500 million years in various of ancient geographic condition such as orogeny, marine transgression and marine regression."
• "These mountains are part of the western Iberian old Hercynian system, which constitutes medium elevations with a smooth relief, scarcely influenced by the Alpine orogeny."