1. relating to the identification of illness or problems
Usage: medical
2. serving to distinguish or identify a particular condition or problem

1. a test or examination used to identify a disease or problem
Usage: medical

Examples

• The doctor ordered diagnostic tests to determine the cause of her symptoms.
• Modern diagnostic equipment can detect diseases at early stages.
• The mechanic used diagnostic tools to find the problem with the engine.
• Blood work is a common diagnostic procedure.
• The diagnostic revealed a minor issue with the computer’s hard drive.
• Her fever was a diagnostic sign of infection.
• The hospital invested in new diagnostic technology.