详细解释:【医】 瞳孔缩小, 缩瞳, 减数分裂, 成熟分裂, [疾病]减退期
英语解释：
名词 miosis:
(genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)同义词：meiosis, reduction division