Stimulus



noun, plural stimuli
[stim-yuh-lahy] /ˈstɪm yəˌlaɪ/ (Show IPA)
1.
something that incites to action or exertion or quickens action, feeling, thought, etc.:
The approval of others is a potent stimulus.
2.
Physiology, Medicine/Medical. something that excites an organism or part to functional activity.
noun (pl) -li (-ˌlaɪ; -ˌliː)
1.
something that stimulates or acts as an incentive
2.
any drug, agent, electrical impulse, or other factor able to cause a response in an organism
3.
an object or event that is apprehended by the senses
4.
(med) a former name for stimulant

stimulus stim·u·lus (stĭm’yə-ləs)
n. pl. stim·u·li (-lī’)

A stimulant.

That which can elicit or evoke an action or response in a cell, an excitable tissue, or an organism.

stimulus
(stĭm’yə-ləs)
Plural stimuli (stĭm’yə-lī’)

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.

stimulus definition

plur. stimuli (stim-yuh-leye)

An action, condition, or person that provokes a response, especially a conditioned response.

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