from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An antihypertensive drug, C8H8N4.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A direct-acting smooth muscle relaxant used to treat hypertension by acting as a vasodilator primarily in arteries and arterioles.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an antihypertensive drug (trade name Apresoline) that dilates blood vessels; used (often with a diuretic) to treat hypertension and congestive heart failure
hydr(o)- + (phth)al(ic acid) + azine.(American Heritage® Dictionary of the English Language, Fourth Edition)