/ Dictionary / Index Y Yeniseian: Meaning and Definition of Find definitions for: Yen•i•sei•an Pronunciation: (yen"u-sā'un), [key] — n. a group of languages spoken in Siberia, the only surviving member of which is Ket. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: yeniseian (Thesaurus) Yenisei Yenisei Ostyak Related Content Daily Word Quiz: epoch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language