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