stimulus - definition and synonyms

noun [countable/uncountable] 

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  1. 1
    anything that encourages something to happen, develop, or improve
    stimulus to:

    The government hopes that lower interest rates will be a stimulus to investment.

    stimulus for:

    We hope that the books will provide a stimulus for discussion.

  2. 2
    biology something that produces a reaction in a plant, animal, or person

    They test the children’s reaction to a simple visual stimulus.

     Synonyms and related words