ethmoidal bulla

eth·moi·dal bul·la

[TA]
a bulging of the inner wall of the ethmoidal labyrinth in the middle meatus of the nose, just below the middle nasal concha; it is regarded as a rudimentary concha.
Synonym(s): bulla ethmoidalis [TA]

eth·moi·dal bul·la

(eth-moydăl bulă) [TA]
Bulging of inner wall of the ethmoidal labyrinth in middle meatus of nose, just below middle nasal concha.