Diagnostic :: Diagnostic (a.) Pertaining to, or furnishing, a diagnosis; indicating the nature of a disease..
Diagnostic :: Diagnostic (n.) The mark or symptom by which one disease is known or distinguished from others.
Diagnosticate :: Diagnosticate (v. t. & i.) To make a diagnosis of; to recognize by its symptoms, as a disease..
Diagnostics :: Diagnostics (n.) That part of medicine which has to do with ascertaining the nature of diseases by means of their symptoms or signs.