Meaning of alienist

al•ien•ist

Pronunciation: (āl"yu-nist, ā"lē-u-), [key]
— n.
  1. (formerly) a doctor specializing in the treatment of mental illness.
  2. an expert witness in a sanity trial.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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