An instrument or a technique used in medical diagnosis.Description: Study of various methods and techniques applied in the diagnostics of high-pressure gas pipelines in different countries.

The discipline or practice of diagnosis.( used with a sing.

Also found in: Thesaurus, Medical, Legal, Acronyms, Encyclopedia, Wikipedia.The course of thematic improvement: "The modern diagnostics and treatment of skin and venereal illnesses".British Dictionary definitions for diagnostics diagnostics noun (functioning as singular) the art or practice of diagnosis, esp of diseases diagnostic adjective of, relating to, or of value in diagnosis noun med any symptom that provides evidence for making a specific diagnosis a diagnosis Derived Formsdiagnostically.