Stretching, dilation, or expansion of blood vessels, often occurring in response to increased blood flow or pressure.
From Greek 'angion' (vessel) + 'tasis' (stretching, extension). This medical term emerged to describe the natural or pathological widening of blood vessels.
Angiotasis happens when blood vessels stretch like elastic bands—it's actually a normal response to exercise or heat, but when it goes wrong it can lead to dangerous varicose veins!
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