/ Dictionary / Index U unilineal: Meaning and Definition of Find definitions for: u•ni•lin•e•al Pronunciation: (y"nu-lin'ē-ul), [key] — adj. unilateral (def. 6). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. unilateralism unilinear Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language