Medical Definition of stimulus
1: stimulant 1
2: an agent (as an environmental change) that directly influences the activity of living protoplasm (as by exciting a sensory organ or evoking muscular contraction or glandular secretion) <a visual stimulus>
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Dictionary: Definition of "stimulus" Thesaurus: All synonyms and antonyms for "stimulus" Spanish Central: Translation of "stimulus" Nglish: Translation of "stimulus" for Spanish speakers Britannica English: Translation of "stimulus" for Arabic speakers Britannica.com: Encyclopedia article about "stimulus"
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