stimulus
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(stĭm′ū-lŭs)
pl. stimuli [L., a goad]
1. A change of environment of sufficient intensity to evoke a response in an organism.
2. An excitant or irritant.
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(stĭm′ū-lŭs)
pl. stimuli [L., a goad]
1. A change of environment of sufficient intensity to evoke a response in an organism.
2. An excitant or irritant.
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