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1. An acute infectious disease occurring in epidemic form and featuring paroxysms of pain (usually in the chest)
   - epidemic pleurodynia, epidemic myalgia, diaphragmatic pleurisy, Bornholm disease
    
2. 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

Derived forms: myoses

See also: myotic

Type of: epidemic disease, inborn reflex, innate reflex, instinctive reflex, physiological reaction, reflex, reflex action, reflex response, unconditioned reflex

Encyclopedia: Myosis