Cavity

Cavity may refer to:

==Biology and healthcare== Body cavity, a fluid-filled space in many animals where organs typically develop Gastrovascular cavity, the primary organ of digestion and circulation in cnidarians and flatworms Dental cavity or tooth decay, damage to the structure of a tooth Lung cavity, an air-filled space within the lung Nasal cavity, a large, air-filled space above and behind the nose in the middle of the face