/ Dictionary / Index O orogeny: Meaning and Definition of Find definitions for: o•rog•e•ny Pronunciation: (ô-roj'u-nē, ō-roj'-), [key] — n. Geol. the process of mountain making or upheaval. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: orogeny (Thesaurus) orogen orographic cloud Related Content Daily Word Quiz: dormant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language