Term Name:	vasodilation
Synonyms:	positive regulation of blood vessel size, vasodilatation
Definition:	An increase in the internal diameter of blood vessels, especially arterioles or capillaries, due to relaxation of smooth muscle cells that line the vessels, and usually resulting in a decrease in blood pressure.
Ontology:	GO: Biological Process [GO:0042311]    QuickGO    AmiGO