myosis

Noun	1.	myosis - an acute infectious disease occurring in epidemic form and featuring paroxysms of pain (usually in the chest) Bornholm disease, diaphragmatic pleurisy, epidemic myalgia, epidemic pleurodynia epidemic disease - any infectious disease that develops and spreads rapidly to many people
	2.	myosis - reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller light reflex, pupillary reflex, miosis inborn reflex, innate reflex, instinctive reflex, physiological reaction, reflex, unconditioned reflex - an automatic instinctive unlearned reaction to a stimulus

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