excitor

[ik-sahy-ter, -tawr]

noun

Physiology. a nerve whose stimulation excites greater action.
Archaic. an exciter.

Origin of excitor

First recorded in 1810–20; excite + -or²

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for excitor

Historical Examples of excitor

Whence it became evident that this nerve is not the excitor, but the sensory nerve concerned in glycogenesis.
A System of Practical Medicine By American Authors, Vol. II
Various
Like the other medicines of this order, Ergot is not an excitor of the heart and circulation.
The Action of Medicines in the System
Frederick William Headland

British Dictionary definitions for excitor

excitor

noun

a nerve that, when stimulated, causes increased activity in the organ or part it supplies
a variant spelling of exciter

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012