Abnormal widening or dilation of an artery, where the blood vessel expands beyond its normal size.
From Greek 'arteria' (artery) combined with 'ektasis' (stretching or dilation), a term developed in medical language to describe the opposite problem of arterial constriction.
Imagine a balloon being blown up too much—that's what arteriectasia is, and it's actually dangerous because the artery can weaken and rupture or form aneurysms!
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