ethmoid sinus(n = noun.body) ethmoidal sinus, sinus ethmoidales - a sinus of the meatuses of the nasal cavity (behind the bridge of the nose);
is a kind of sinus

cavernous sinus, coronary sinus, ethmoid, ethmoid bone, ethmoidal sinus, frontal sinus, maxillary sinus, nasal sinus, paranasal sinus, phocaena sinus, sigmoid sinus, sinus, sinus cavernosus, sinus coronarius, sinus ethmoidales, sinus headache, sinus paranasales, sinus rectus, sinus sigmoideus, sinus transversus, sinus venosus sclerae, straight sinus, tentorial sinus, transverse sinus, venous sinus