/ Dictionary / Index I Isaian: Meaning and Definition of Find definitions for: I•sa•ian Pronunciation: (ī-zā'un or, esp. Brit., ī-zī'), [key] — adj. of, pertaining to, or characteristic of Isaiah or of the book of the Bible bearing his name. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Isaiah isallobar Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language