an acute infectious disease occurring in epidemic form and featuring paroxysms of pain (usually in the chest)

[ Syn: epidemic pleurodynia , epidemic myalgia , diaphragmatic pleurisy , bornholm disease ]

reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller

[ Syn: light reflex , pupillary reflex , miosis ]