[əˈtriːʃə, -zɪə]noun
[mass noun]
(Medicine)absence or abnormal narrowing of an opening or passage in the body
(医)无孔，闭锁，不通
(Physiology)the degeneration of those ovarian follicles which do not ovulate during the menstrual cycle
(生理)（不排卵的卵巢滤泡的）萎缩消失