reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller 同义词：light reflex, pupillary reflex, miosis,
an acute infectious disease occurring in epidemic form and featuring paroxysms of pain (usually in the chest) 同义词：epidemic pleurodynia, epidemic myalgia, diaphragmatic pleurisy, Bornholm disease,
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