2 definitions found From The Collaborative International Dictionary of English v.0.48 [gcide]: Coarctation \Co`arc*ta"tion\, n. [L. coarctatio.] 1. Confinement to a narrow space. [Obs.] --Bacon. [1913 Webster] 2. Pressure; that which presses. [Obs.] --Ray. [1913 Webster] 3. (Med.) A stricture or narrowing, as of a canal, cavity, or orifice. [1913 Webster] From WordNet (r) 2.0 [wn]: 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
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