diagnostic: Meaning and Definition of

di•ag•nos•tic

1. of, pertaining to, or used in diagnosis.
2. serving to identify or characterize; being a precise indication.

1. diagnosis (def. 1).
2. a symptom or characteristic of value in diagnosis.
3. a device or substance used for the analysis or detection of diseases or other medical conditions.
1. a message output by a computer diagnosing an error in a computer program, computer system, or component device.
2. a program or subroutine that produces such messages.