Vasodilatationnoun
dilatation of a blood vessel
Vasodilationnoun
Dilation or widening of the blood vessels.
Vasodilationnoun
dilation of blood vessels (especially the arteries)
Vasodilation
Vasodilation is the widening of blood vessels. It results from relaxation of smooth muscle cells within the vessel walls, in particular in the large veins, large arteries, and smaller arterioles.