Psychiatrist
来自Big Physics
mid 19th century: from Greek psukhē ‘soul, mind’ + iatreia ‘healing’ (from iatros ‘healer’).
wiktionary
From psychiatry + -ist.
etymonline
psychiatrist (n.)
"one who practices psychiatry," 1875, from psychiatry + -ist.
A psychiatrist is a man who goes to the Folies Bergère and looks at the audience. [Anglican Bishop Mervyn Stockwood, 1961]
An older name was mad-doctor (1703); also psychiater "expert in mental diseases" (1852), from Greek psykhē + iatros. Also see alienist.