From psychiatry + -ic or psych- + -iatric.

• enPR: sī'-ki-ătʹ-rĭk, IPA: /ˌsaɪ.ki.ˈæt.ɹɪk/

psychiatric (not comparable)

1. Of, or relating to, psychiatry.

• French: psychiatrique
• German: psychiatrisch
• Italian: psichiatrico
• Portuguese: psiquiátrico
• Russian: психиатри́ческий
• Spanish: psiquiátrico

psychiatric (plural psychiatrics)

1. (dated) A person who has a psychiatric disorder.
   • 1954, United States. Congress. House. Committee on Appropriations, Hearings, page 907:

     They are the tuberculars, the psychiatrics, and the older men suffering from chronic conditions. All of those men are totally disabled.