Psychiatry

google

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mid 19th century: from Greek psukhē ‘soul, mind’ + iatreia ‘healing’ (from iatros ‘healer’).

wiktionary

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[1846] From French psychiatrie, from Medieval Latin psychiatria. Surface etymology is psych- +‎ -iatry.

etymonline

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psychiatry (n.)

"the medical treatment of mental diseases," 1846, from French psychiatrie, from Medieval Latin psychiatria, literally "a healing of the soul," from Latinized form of Greek psykhē "mind" (see psyche) + iatreia "healing, care" (see -iatric).