n an acute infectious disease occurring in epidemic form and featuring paroxysms of pain (usually in the chest)
n reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
n. 瞳孔缩小, 缩瞳症
[医] 瞳孔缩小, 缩瞳; 成熟分裂, 减数分裂; [疾病]减退期