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dementia definition

de·men·tia (di men′s̸hə)

noun

  1. Obsolete insanity; madness
  2. Psychiatry a disorder of the mind affecting perception, memory, and judgment, characterized by reduced ability to remember, control muscular movements, recognize familiar objects and sounds, etc.

Etymology: L, insanity < demens: see dement

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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