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Pronunciation: lu'na-se


  1. An obsolete term for a form of insanity characterized by alternating lucid and insane periods, believed to be influenced by phases of the moon.
  2. Any form of insanity.
  3. Insanity as defined variously by law.

[L. luna, moon]

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