/ Dictionary / Index Y Yeniseian: Meaning and Definition of Find definitions for: Yen•i•sei•an Pronunciation: (yen"u-s?'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: wizened Analogy of the Day: Today?s Analogy Spelling Bee: Today?s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language