Diagnosis (noun)

1. The process of identifying a disease or condition by its symptoms.
2. The identification of the nature of an illness or other problem by examination of the symptoms.
3. The conclusion or judgment reached through examination and analysis of symptoms.
4. The identification of the cause or nature of a particular medical condition.
5. The decision reached by a doctor or other medical professional about the cause and nature of a particular medical condition.

Origin:

Late middle english: from greek, literally "distinguishing", from diagignōskein "distinguish, recognize", from dia- "thoroughly" + gignōskein "know".

Examples:

1. The diagnosis was pneumonia.
2. The final diagnosis was a broken leg.
3. The diagnosis was not clear.
4. The patient received a diagnosis of cancer.
5. The veterinarian made a diagnosis of the horse's illness.