tympanic opening of pharyngotympanic (auditory) tube

tym·pan·ic o·pen·ing of pharyngotympanic (au·di·to·ry) tube

[TA] an opening in the anterior part of the tympanic cavity below the canal for the tensor tympani (muscle). Synonym(s): ostium tympanicum tubae auditivae [TA], tympanic opening of eustachian tube