1. Concerned with diagnosis; used for furthering diagnosis
   "a diagnostic reading test"
    
2. Characteristic or indicative of a disease
   "a diagnostic sign of yellow fever";
   - symptomatic

1. A test or procedure used to identify a disease, condition, or problem
   "The doctor ordered several diagnostics to determine the cause of the symptoms"

Derived forms: diagnostics

See also: characteristic

Encyclopedia: Diagnostic