coarctation

American  

[koh-ahrk-tey-shuhn] / ˌkoʊ ɑrkˈteɪ ʃən /

noun

1. Pathology.

   1. a narrowing of the lumen of a blood vessel.

   2. a congenital anomaly of the heart in which there is a narrowing of the aorta, resulting in abnormal blood flow.

2. Entomology. the condition of having the body enclosed in a hardened shell or puparium.

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Etymology

Origin of coarctation

1400–50; late Middle English coartacioun pressure, constriction < Latin coar ( c ) tātiōn-, stem of coar ( c ) tātiō; see coarctate, -ion