ethmoid sinus, n.
a sinus of the meatuses of the nasal cavity (behind the bridge of the nose)
<noun.body>
ethmoid sinus ethmoidal sinus sinus ethmoidales
semantic pointers
hypernym
Word
a sinus of the meatuses of the nasal cavity (behind the bridge of the nose)
<noun.body>
ethmoid sinus ethmoidal sinus sinus ethmoidales