Definition of Vasodilation

Vasodilation: Widening of blood vessels that results from relaxation of the muscular walls of the vessels. What widens in vasodilation is actually
the diameter of the interior (lumen) of the vessel. The opposite of vasodilation is vasoconstriction.


Last Editorial Review: 3/19/2012

Search MedTerms:


Back to MedTerms online medical dictionary A-Z List
Pill Identifier Tool

Need help identifying pills and medications?
Use the pill finder tool on RxList.