/ Dictionary / Index Y Yenisei: Meaning and Definition of Find definitions for: Ye•ni•sei Pronunciation: (yen"u-sā'), [key] — n. a river in the Russian Federation in Asia, flowing N from the Sayan Mountains to the Kara Sea. 2566 mi. (4080 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: yenisei (Thesaurus) Yen Hsi-shan Yeniseian Related Content Daily Word Quiz: verdant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language