Definition of Nasal septum Nasal septum: The dividing wall that runs down the middle of the nose, separating the two nasal 'cavities, each of which ends in a nostril. The nasal septum is composed of bone, cartilage, and 'membranes.
Nasal septum: The dividing wall that runs down the middle of the nose, separating the two nasal 'cavities, each of which ends in a nostril. The nasal septum is composed of bone, cartilage, and 'membranes.
