- 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.
stimulus definition by Webster's New World
- something that rouses or incites to action or increased action; incentive
- 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, activates a muscle, etc.
Origin: Classical Latin a goad, sting, torment, pang, spur, incentive: see style
stimulus definition by American Heritage Dictionary
noun pl. stim·u·li
- Something causing or regarded as causing a response.
- An agent, action, or condition that elicits or accelerates a physiological or psychological activity or response.
- Something that incites or rouses to action; an incentive: “Works which were in themselves poor have often proved a stimulus to the imagination” (W.H. Auden).
Origin: Latin, goad.
stimulus - Cultural Definition
plur. stimuli (stim-yuh-leye)
An action, condition, or person that provokes a response, especially a conditioned response.
stimulus - Medical Definition
noun pl. stim·u·li
- A stimulant.
- That which can elicit or evoke an action or response in a cell, an excitable tissue, or an organism.
stimulus - Science Definition
Plural stimuli stimuli
- 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.
- Something that has an impact or an effect on an organism so that its behavior is modified in a detectable way. See more at classical conditioning.