Definitions of myosis
  1. noun
    reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
  2. noun
    an acute infectious disease occurring in epidemic form and featuring paroxysms of pain (usually in the chest)
    synonyms: Bornholm disease, diaphragmatic pleurisy, epidemic myalgia, epidemic pleurodynia
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    type of:
    epidemic disease
    any infectious disease that develops and spreads rapidly to many people
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