To encourage into action. / To arouse an organism to functional activity.

An external phenomenon that has an influence on a system, by triggering or modifying an internal phenomenon; for example, a spur or incentive that drives a person to take action or change behaviour.

plural of stimulus

(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.

In a condition or state of stimulation.

simple past tense and past participle of stimulate

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

Having a manner that stimulates.

present participle of stimulate