hiatus for greater petrosal nerve

hi·a·tus for great·er pe·tro·sal nerve

[TA]

the opening on the anterior aspect of the petrous part of the temporal bone that leads to the facial canal and gives passage to the greater petrosal nerve.

Synonym(s): hiatus canalis nervi petrosi majoris [TA], fallopian hiatus, Ferrein foramen, hiatus canalis facialis, hiatus of facial canal