coarctation

[koh-ahrk-tey-shuh n]

Pathology.

a narrowing of the lumen of a blood vessel.
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.

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. 2019

coarctation in Medicine

[kō′ärk-tā′shən]

A constriction, stricture, or stenosis.