(pharmacology) A substance that acts to increase physiological or nervous activity in the body. / Something that promotes activity, interest, or enthusiasm.

(pharmacology) Acting as a stimulant.

A pushing or goading toward action. [from 16th c.] / (biology) Any action or condition that creates a response; sensory input. [from 18th c.]

plural of stimulation

Third-person singular simple present indicative form of stimulate

plural of stimulator

A person, device or substance that stimulates.

plural of stimulant

Having a stimulating effect.

(obsolete) Something having a stimulating effect; a stimulant, an incentive.