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The Collaborative International Dictionary
Vasodilator

Vasodilator \Vas`o*di*lat"or\, a.[L. vas a vessel + dilator.] (Physiol.) Causing dilation or relaxation of the blood vessels; as, the vasodilator nerves, stimulation of which causes dilation of the blood vessels to which they go. These nerves are also called vaso-inhibitory, and vasohypotonic nerves, since their stimulation causes relaxation and rest.

Wiktionary
vasodilator

n. (context pharmacology English) A drug or chemical agent that causes dilation of the blood vessels thereby reducing blood pressure.

WordNet
vasodilator

n. a drug that causes dilation of blood vessels [syn: vasodilative]

Usage examples of "vasodilator".

Painkiller, blood-thinner, tranquillizer, vasodilator, and diuretic all drip into his system from above, painting the hospital world with rosy tints of benevolence and amusement.

Milton proposed to treat the problem with a combination of beta-blocking agents to decrease the work of the heart and slow the pulse rate, and vasodilators designed to increase coronary circulation.

Brown's blood pressure was 220 – despite vasodilators administered orally.

She reaches down and tears away the gel pouch, exposing his penis: it's stiff as a post from the vasodilators, dripping with gel, numb.