- the act or process of discovering or identifying a diseased condition by means of a medical examination, laboratory test, etc.
- a careful examination and analysis of the facts in an attempt to understand or explain something: a diagnosis of the economy
- a decision or opinion based on such examination
- Taxonomy a short scientific description for classification
Origin of diagnosisModern Latin from Classical Greek diagn?sis, a distinguishing from diagign?skein, to distinguish: see dia- and -gnosis