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  1. Dictionary
    stimulus
    /ˈstɪmjʊləs/

    noun

    • 1. a thing or event that evokes a specific functional reaction in an organ or tissue: "areas of the brain which respond to auditory stimuli"

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  2. dictionary.cambridge.org › dictionary › englishSTIMULUS | English meaning - Cambridge Dictionary

    A stimulus is something that causes growth, activity, or reaction. Learn more about the different types and uses of stimuli in biology, economics, and language with Cambridge Dictionary.

  3. www.merriam-webster.com › dictionary › stimulusStimulus Definition & Meaning - Merriam-Webster

    Learn the meaning of stimulus as a noun, with synonyms, examples, and word history. A stimulus is something that rouses or incites to activity, or an agent that influences the activity of a living organism.

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  5. www.dictionary.com › browse › stimulusSTIMULUS Definition & Meaning | Dictionary.com

    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.

  6. www.collinsdictionary.com › dictionary › englishSTIMULUS definition and meaning | Collins English Dictionary

    A stimulus is something that encourages activity in people or things, or that causes a response in an organism. Learn more about the word origin, synonyms, pronunciation, and usage of stimulus with Collins English Dictionary.

  7. dictionary.cambridge.org › us › dictionarySTIMULUS | definition in the Cambridge English Dictionary

    A stimulus is something that causes growth, activity, or reaction. Learn how to use the word in different contexts, such as economics, biology, and language, with examples and synonyms.

  8. www.vocabulary.com › dictionary › stimulusStimulus - Definition, Meaning & Synonyms | Vocabulary.com

    A stimulus causes an action or response, like the ringing of your alarm clock if you didn't sleep through it. Stimulus is a word often used in biology — something that causes a reaction in an organ or cell, for example.

  9. dictionary.cambridge.org › dictionary › learner-englishSTIMULUS | meaning - Cambridge Learner's Dictionary

    A stimulus is something that makes something else happen, grow, or develop more. Learn more about the word stimulus, its synonyms, and how to use it in sentences with the Cambridge Learner's Dictionary.