[医] 瞳孔缩小, 缩瞳; 成熟分裂, 减数分裂; [疾病]减退期

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

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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

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