/ Dictionary / Index O oculomotor nerve: Meaning and Definition of Find definitions for: oculomo'tor nerve" Pronunciation: [key] — Anat. Anat. either one of the third pair of cranial nerves, consisting chiefly of motor fibers that innervate most of the muscles of the eyeball. See diag. under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oculomotor oculus Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language