vasodilatation

[vas-oh-dil-uh-tey-shuh n, -dahy-luh-, vey-zoh-]

dilatation of the blood vessels, as by the action of a nerve.

Also vas·o·di·la·tion

[vas-oh-dahy-ley-shuh n, -di-, vey-zoh-] /ˌvæs oʊ daɪˈleɪ ʃən, -dɪ-, ˌveɪ zoʊ-/.

Origin of vasodilatation

First recorded in 1895–1900; vaso- + dilatation

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

We know that when the pulse rate is constant, vasodilatation causes a fall in diastolic pressure and a rise in pulse pressure.
Arteriosclerosis and Hypertension:
Louis Marshall Warfield

vasodilatation in Science

[vā′zō-dī-lā′shən, -dĭ-]

Dilation of a blood vessel, as by the action of a nerve or drug.