noun. (biology) a narrowing or constriction of a vessel or canal; especially a congenital narrowing of the aorta.
noun. tight or narrow compression.
Example sentences of the word coarctation
1. Noun, singular or mass
Renal artery stenosis, which causes impaired blood flow to the kidneys, and coarctation of the aorta, a congenital condition that causes narrowing of the aorta, also lead to high blood pressure.