Rabu, 17 Mei 2017 Ethmoid Ethmoid Sinus Hiatus Semilunaris Hiatus Semilunaris Sinus Ethmoid Sinus Hiatus Semilunaris Semilunar hiatus wikipedia. The hiatus semilunaris (or semilunar hiatus) is a crescentshaped groove inside the lateral wall of the nasal cav...