atresia

名词 atresia:

1. an abnormal condition in which a normal opening or tube in the body (as the urethra) is closed or absent

a.tre.sia

n.（名词）
The absence or closure of a normal body orifice or tubular passage such as the anus, intestine, or external ear canal.
（先天性）闭锁，无孔：正常的身体孔或管道，如肛门、肠或外耳道的缺失或闭合
The degeneration and resorption of one or more ovarian follicles before a state of maturity has been reached.
退化：一个或多个卵子囊在达到成熟状态之前的退化或消失

来源：
New Latin
现代拉丁语
Greek a- [not, without] * see a-
希腊语 a- [不，没有] *参见 a-
trôsis [perforation, orifice] * see ter…-
trôsis [孔，洞] *参见 ter…-

【引伸】
atresic