tympanic sinus

n.

A depression in the tympanic cavity behind the tympanic promontory.

Words nearby tympanic sinus

tympanic notch, tympanic opening of auditory tube, tympanic plate, tympanic plexus, tympanic ring, tympanic sinus, tympanic vein, tympanist, tympanites, tympanitic, tympanitic resonance