stylomastoid artery
[ stī′lō-măs′toid′ ]
n.
An artery with origin in the posterior auricular artery, with distribution to the external ear, mastoid cells, semicircular canals, stapedius muscle, and vestibule, and with anastomoses to the tympanic branches of the internal carotid and the ascending pharyngeal arteries, and to the auditory branch of the basilar artery.