Breadcrumb Home > Dictionary > Index O Outer Mongolia: Meaning and Definition of Find definitions for: Out'er Mongo'lia Pronunciation: [key] former name of Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Outer Hebrides outermost ✖ Related Content Daily Word Quiz: quadrumanous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language