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Word of the Day
Sunday, March 26, 2017

Definitions for orogeny

  1. Geology. the process of mountain making or upheaval. Also called orogenesis.

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Citations for orogeny
Ogden Tweto, the foremost expert on the Laramide orogeny believes the New Rockies began to emerge 72,000,000 years ago, with the process terminating about 43,000,000 years ago. James A. Michener, Centennial, 1974
The southern mountain range, like the one at the lower tip of the peninsula which was folded during the same orogeny, was a refuge for the flora and fauna of a continent during the Ice Age. Jean M. Auel, The Clan of the Cave Bear, 1980
Origin of orogeny
The -geny of orogeny is easy to recognize and common, meaning “production, formation,” related to genesis, another Greek noun. The oro- part is not as common or its meaning so obvious. It comes from the Greek noun óros (stem ore-) “mountain, hill,” from a complicated Proto-Indo-European root er-, or-, r- (with other variants) "to move, rise, excite." This root is the source of English are (of the verb to be), and the Latin verb orīrī “to arise, be born,” which has the present participle stem orient- “rising, rising sun, east.” Orogeny entered English in the 19th century.