Final answer:
The middle meatus contains the hiatus semilunaris, which is a passageway to the ethmoidal cells and maxillary sinus in the nasal cavity.
Step-by-step explanation:
The meatus that contains the hiatus semilunaris is the middle meatus.
The meatuses are passageways in the nasal cavity that help with the movement of air and mucus. The middle meatus is located between the inferior and middle nasal conchae.
The hiatus semilunaris is a narrow groove within the middle meatus that leads to the ethmoidal cells and the maxillary sinus.