hydralazine

== English == === Etymology === Contraction of hydrazinophthalazine. === Pronunciation === (General American) IPA(key): /haɪˈdɹæl.əˌziːn/ === Noun === hydralazine (countable and uncountable, plural hydralazines) (pharmacology) A direct-acting smooth muscle relaxant used to treat hypertension by acting as a vasodilator primarily in arteries and arterioles. ==== Derived terms ==== -dralazine hydralazine hydrochloride === References === “hydralazine”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.