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Pronunciation: si'ko-nok'shus


  1. Having an unfavorable effect on the emotional life and reactions mediated by higher levels of the central nervous system; may be endogenous or exogenous.
  2. Denoting people who or situations that elicit fear, pain, anxiety, or anger.

[psycho- + L. noxius, harmful]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.