al·ien·ist (āl'yə-nĭst, ā'lē-ə-) n. A physician who has been accepted by a court of law as an expert on the mental competence of principals or witnesses appearing before it.
[French aliéniste, from aliéné, insane, from Latin aliēnātus, past participle of aliēnāre, to deprive of reason; see alienate.]
Main Entry: alien·ist Pronunciation: 'A-lE-&-nist, 'Al-y&- Function: noun : a psychiatrist who specializes in the legal aspects of psychiatry (as determining sanity or capacity to stand trial)
Main Entry: alien·ist Pronunciation: 'A-lE-&-n&st, 'Al-y&- Function: noun :PSYCHIATRIST; especially: one specializing in the legal aspects of psychiatry