ˈklänəˌdēn, ˈklōn-, -ˌdīn noun
( -s )
Etymology: c h lo r- + phe n yl + im id azol ine
: an antihypertensive drug C 9 H 9 Cl 2 N 3 used especially to treat essential hypertension, to prevent migraine headache, and to diminish opiate withdrawal symptoms