/ Dictionary / Index O oral herpes: Meaning and Definition of Find definitions for: o'ral her'pes Pronunciation: [key] — Pathol. Pathol. a disease caused by herpes simplex virus type 1, characterized primarily by a cluster of small, transient blisters chiefly at the edge of the lip or nostril; herpes labialis. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. orale oral history Related Content Daily Word Quiz: hale Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language