vasodilator

noun Physiology, Pharmacology.

1. a nerve or drug that causes vasodilatation.

noun

1. a drug, agent, or nerve that can cause dilatation (vasodilatation) of the walls of blood vessels

adjective

2. causing vasodilatation

n.

1. Something, such as a nerve or drug, that causes vasodilation.

adj.

1. Producing vasodilation.