excitation

  1. Noun.  The act of exciting or putting in motion; the act of rousing up or awakening.
  2. Noun.  The act of producing excitement (stimulation); also, the excitement produced.
  3. Noun.  (physiology) The activity produced in an organ, tissue, or part, such as a nerve cell, as a result of stimulation.
  4. Noun.  (physics) The change in state as an excited state is formed by the absorption of a quantum of energy.

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