yohimbine
(redirected from Johimbine)Also found in: Dictionary, Medical.
yohimbine
[yō′him‚bīn] (pharmacology)
C21H26N2O3 An alkaloid derived from plants that is a weak blocker of alpha-adrenergic receptors, used as a mydriatic and in the treatment of impotence.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.