inferior petrosal sinus

Noun

 * 1)  The larger of the two petrosal sinuses that is situated inferiorly in a sulcus on each side formed by the junction of the petrous portion of the temporal bone and the basilar portion of the occipital bone and that extends from the posterior inferior end of the cavernous sinus through the jugular foramen to join the internal jugular vein of the same side.

Translations

 * Chinese:
 * Mandarin: 岩下竇; 下岩竇