excitant[ek sīt′'nt, ik-; ek′sə tənt]
excitant definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
Origin: Classical Latin excitans, present participle of excitare: see excite
excitant definition by American Heritage Dictionary
Tending to excite; stimulating.noun
An agent or stimulus that excites; a stimulant.