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Definition of stimulus:

  1. In med., that which produces a sudden but transitory increase of vital action; anything that excites to action; a stimulant; in bot., applied to stinging hairs with an irritating secretion at the base.


stimulant drug, stimulator, fillip, nourishment, arousal, push, prompt, yeast, input signal, foreplay, input, incitation, spur, stimulation, comment, momentum, persuasion, remark, goad, stimulant, trigger, excitant, boost, encouragement.

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