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Definition of Orogeny
1. Noun. The process of mountain formation (especially by the upward displacement of the earth's crust).
Definition of Orogeny
1. Noun. (geology) the process of mountain building by the upward folding of the Earth's crust. ¹
¹ Source: wiktionary.com
Definition of Orogeny
1. the process of mountain formation [n -NIES] : OROGENIC [adj]