/ Dictionary / Index O Omsk: Meaning and Definition of Find definitions for: Omsk Pronunciation: (ômsk), [key] — n. a city in the SW Russian Federation in Asia on the Irtysh River. 1,148,000. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: omsk (Thesaurus) Omri Omuta Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language