Stimulus definition

stĭmyə-ləs
Frequency:
(physiol., psychol.) Any action or agent that causes or changes an activity in an organism, organ, or part, as something that excites an end organ, starts a nerve impulse, or activates a muscle.
noun
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Something causing or regarded as causing a response.
noun
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An agent, action, or condition that elicits or accelerates a physiological or psychological activity or response.
noun
4
2
Something that has an impact or an effect on an organism so that its behavior is modified in a detectable way.
3
1
Government spending designed to generate or increase economic activity.
noun
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Stimulus is something that causes a reaction, especially interest, excitement or energy.

An example of stimulus is a shiny object for a baby.

An example of stimulus is an influx of cash into the economy that is designed to help the economy to gain momentum or energy.

noun
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Anything that may have an impact or influence on a system.

An economic stimulus.

noun
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(psychology) Anything effectively impinging upon any of the sensory apparatuses of a living organism, including physical phenomena both internal and external to the body.
noun
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Anything that induces a person to take action.
noun
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(physiology) Something that can elicit or evoke a physiological response in a cell, a tissue, or an organism. A stimulus can be internal or external. Sense organs, such as the ear, and sensory receptors, such as those in the skin, are sensitive to external stimuli such as sound and touch.
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Something that incites or rouses to action; an incentive.
noun
0
1
(physiology) Something external that elicits or influences a physiological or psychological activity or response.
noun
0
1
An agent, action, or condition that elicits or accelerates a physiological or psychological activity or response.
noun
5
7
Something causing or regarded as causing a response.
noun
2
5
Something that rouses or incites to action or increased action; incentive.
noun
2
5
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Other Word Forms

Noun

Singular:
stimulus
Plural:
stimuli

Origin of stimulus

  • Latin goad

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin stimulus (“goad, prick")

    From Wiktionary