oculomotor nerve

oculomotor nerve

noun

Definition of OCULOMOTOR NERVE

: either nerve of the third pair of cranial nerves that are motor nerves with some associated autonomic fibers, arise from the midbrain, supply muscles of the eye except the superior oblique and the lateral rectus with motor fibers, and supply the ciliary body and iris with autonomic fibers by way of the ciliary ganglion—called also third cranial nerve