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English definition of “stimulus”

stimulus

noun [C] uk   /ˈstɪm.jʊ.ləs/ (plural stimuli /ˈstɪm.jʊ.laɪ/) us  
C2 something that causes growth or activity: Foreign investment has been a stimulus to the industry. The book will provide a stimulus to research in this very important area. specialized biology something that causes part of the body to react: The tip of the tongue is sensitive to salt and sweet stimuli and the back of the tongue is sensitive to bitter stimuli.
(Definition of stimulus from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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