stimulus

  1. Noun.  Anything that may have an impact or influence on a system.
  2. Noun.  (physiology) Something external that elicits or influences a physiological or psychological activity or response.
  3. Noun.  (psychology) Anything effectively impinging upon any of the sensory apparatuses of a living organism, including physical phenomena both internal and external to the body.
  4. Noun.  Anything that induces a person to take action.

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This entry was last updated on RefTopia from its source on 3/20/2012.