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Definitions of dementia

  1. mental deterioration of organic or functional origin Scrapingweb Dictionary DB
  2. Insanity; madness; esp. that form which consists in weakness or total loss of thought and reason; mental imbecility; idiocy. Webster Dictionary DB
  3. Unsoundness of mind; insanity. The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919.
  4. A form of insanity, characterised by a rapid succession of imperfect and disconnected ideas, with loss of reflection and attention. Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.