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Meaning Of Stimulus
v. t.
A goad; hence, something that rouses the mind or
spirits; an incentive; as, the hope of gain is a powerful stimulus to
labor and action.
v. t.
That which excites or produces a temporary increase of
vital action, either in the whole organism or in any of its parts;
especially (Physiol.), any substance or agent capable of evoking the
activity of a nerve or irritable muscle, or capable of producing an
impression upon a sensory organ or more particularly upon its specific
end organ.