资料来源 : pyDict

狭窄; 紧压; 缩窄

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Coarctation \Co`arc*ta"tion\, n. [L. coarctatio.]
   1. Confinement to a narrow space. [Obs.] --Bacon.

   2. Pressure; that which presses. [Obs.] --Ray.

   3. (Med.) A stricture or narrowing, as of a canal, cavity, or
      orifice.

资料来源 : WordNet®

coarctation
     n 1: tight or narrow compression [syn: {constriction}]
     2: (biology) a narrowing or constriction of a vessel or canal;
        especially a congenital narrowing of the aorta