Definition of "diagnostic" in English

adjective

1. Of, or relating to diagnosis.

2. (medicine) Characteristic of a particular disease.

3. Serving to indicate or specify a particular item or thing within a group of similar things.

4. (education) Intended to assess a student's preexisting knowledge on the material being taught.

   • A diagnostic assessment

5. (biology) (of a skeletal or genetic feature) Characteristic of a particular taxon or clade.

noun

1. Any technique used in medical diagnosis.

2. (computing) Any tool or technique used to find the root of a problem.

3. That by which anything is known; a symptom.