SG Heritage Dictionary

Excitant [Noun] Webster's Dictionary 1828

That which produces or may produce increased action in a living body; a stimulant.

Excitant [Adjective] Webster's Dictionary 1913

Tending to excite; exciting.

Excitant [Noun] Webster's Dictionary 1913

An agent or influence which arouses vital activity, or produces increased action, in a living organism or in any of its tissues or parts; a stimulant.