late 14c., from Old French pleurisie (13c., Modern French pleurésie) and directly from Late Latin pleurisis "pleurisy," alteration of Latin pleuritis "pain in the side," from Greek pleuritis, from pleura "side of the body, rib," of unknown origin. Spelling altered in Late Latin on model of Latin stem plur- "more" (cf. Medieval Latin pluritas "multitude"), as if in reference to "excess of humors."
An inflammation of the pleura, usually occurring because of complications of a disease such as pneumonia, and accompanied by accumulation of fluid in the pleural cavity, chills, fever, and painful breathing and coughing.pleuritis
An inflammation of the pleura, usually occurring because of complications of a respiratory disease or condition such as pneumonia, tuberculosis, pleural injury, or asbestos exposure. Pleurisy is usually accompanied by the accumulation of fluid between the pleurae, chills, fever, and painful breathing and coughing.