/ Dictionary / Index S Selenga: Meaning and Definition of Find definitions for: Sel•en•ga Pronunciation: (sel"eng-gä'), [key] — n. a river in N central Asia, flowing E and N through the NW Mongolian People's Republic through the Buryat Autonomous Republic in the SE Russian Federation to Lake Baikal. ab. 700 mi. (1125 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Selene selenic Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language