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1780, "pertaining to hospital patients or hospital care," from clinic + -al (2). Meaning "coldly dispassionate" (like a medical report) is recorded from 1928. Related: Clinically.
clinical clin·i·cal (klĭn'ĭ-kəl)adj.
Relating to the bedside treatment of a patient or to the course of the disease.
Relating to the observed symptoms and course of a disease.