hydralazine
noun
hy·dral·azine hī-ˈdra-lə-ˌzēn 
: a vasodilator C8H8N4 used in the form of its hydrochloride to treat hypertension
Example Sentences
Recent Examples on the Web The primary recommended drugs – considered safe for pregnant and recently delivered moms – are both delivered by IV: labetalol and hydralazine. 
Cara Kelly, USA TODAY, 27 July 2018
Cara Kelly, USA TODAY, 27 July 2018 Word History
Etymology
hydr- + phthalic (acid) + azine
First Known Use
1952, in the meaning defined above
Medical Definition
hydralazine
noun
hy·dral·azine hī-ˈdral-ə-ˌzēn
: an antihypertensive drug that is used in the form of its hydrochloride C8H8N4·HCl and produces peripheral arteriolar dilation by relaxing vascular smooth muscle