[vas-oh-dil-uh-tey-shuh
n, -dahy-luh-, vey-zoh-] 
| dilatation of the blood vessels, as by the action of a nerve. |
[vas-oh-dahy-ley-shuhn, -di-, vey-zoh-] .| va·so·dil·a·tion (vā'zō-dī-lā'shən, -dĭ-) n. Dilation of a blood vessel, as by the action of a nerve or drug. |
vasodilation va·so·di·la·tion (vā'zō-dī-lā'shən, -dĭ-) or va·so·dil·a·ta·tion (-dĭl'ə-tā'shən, -dī'lə-)
n.
Dilation of a blood vessel, as by the action of a nerve or drug. Also called phlebarteriectasia.