( n. )
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.
( n. )
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.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012