cough The sudden explosive release of air from the lungs, which clears respiratory passages of obstruction an excess mucus or pus; it occurs both on reflex and on volition. Air flow may reach high velocity and potentially infectious particles spread a great distance if the mouth is uncovered. Persistent cough always implies disease. Related category HEALTH AND DISEASE Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |