/ Dictionary / Index T Tumen: Meaning and Definition of Find definitions for: Tu•men Pronunciation: (ty'mœn'), [key] — n. Pinyin, Wade-Giles. a river in E Asia, flowing NE along the China-North Korea border and then SE along the border between China and Russia to the Sea of Japan. ab. 325 mi. (525 km) long. Also called, Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tumefy tumesce Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language