n. 狭窄

[医] 狭窄

[ noun ]
abnormal narrowing of a bodily canal or passageway
<noun.state>

Stenosis \Ste*no"sis\, n. [NL., fr. Gr. steno`s narrow.] (Med.)
A narrowing of the opening or hollow of any passage, tube, or
orifice; as, stenosis of the pylorus. It differs from
stricture in being applied especially to diffused rather than
localized contractions, and in always indicating an origin
organic and not spasmodic.