[ klon-i-deen, kloh-ni- ]
/ ˈklɒn ɪˌdin, ˈkloʊ nɪ- /

noun Pharmacology.

a synthetic white crystalline substance, C9H9Cl2N3, used in the treatment of high blood pressure.

Origin of clonidine

1965–70; c(h)lo(ro)-2 + (a)ni(line) + (imi)d(e), extracted from the chemical name + -ine2 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for clonidine


[ klŏnĭ-dēn′, klōnĭ- ]


A synthetic drug used in the treatment of hypertension and for the prevention of migraine headaches.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.