Breadcrumb Home > Dictionary > Index O otitis externa: Meaning and Definition of Find definitions for: oti'tis ex•ter'na Pronunciation: (ik-stûr'nu), [key] — Pathol. Pathol. inflammation of the external ear. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. otitis otitis interna ✖ Related Content Daily Word Quiz: sophism Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language