alienist(redirected from alienists)
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A physician who evaluates the competence of defendants to stand trial.
[Obsolete French aliéniste, psychiatrist : obsolete French aliéné, mentally ill (from past participle of aliéner, to estrange, make hostile, deprive of reason, from Old French, from Latin aliēnāre, to deprive of reason; see alienate) + French -iste, -ist (from Old French; see -ist).]
1. (Psychiatry) US a psychiatrist who specializes in the legal aspects of mental illness
2. (Psychiatry) obsolete a person who practises alienism
al•ien•ist(ˌeɪl yə nɪst, ˌeɪ li ə-)
1. (formerly) a physician specializing in the treatment of mental illness; psychiatrist.
2. an expert witness in a sanity trial.