Breadcrumb Home > Dictionary > Index B binational: Meaning and Definition of Find definitions for: bi•na•tion•al Pronunciation: (bī-nash'u-nl), [key] — adj. of or pertaining to two nations. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bination binaural ✖ Related Content Daily Word Quiz: tautology Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language