coarctation

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

noun

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

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Origin of coarctation

1400–50; late Middle English coartacioun pressure, constriction <Latin coar(c)tātiōn-, stem of coar(c)tātiō;see coarctate, -ion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for coarctation

coarctation
[ kō′ärk-tāshən ]

n.

A constriction, stricture, or stenosis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.