di·ag·nose [ d əg nss, d əg nz ](past and past participledi·ag·nosed, present participledi·ag·nos·ing, 3rd person present singulardi·ag·nos·es)
transitive verb
Definition:
1. identify illness in patient: to identify an illness or disorder in a patient through an interview, physical examination, and medical tests and other procedures
2. identify cause of something: to identify the nature or cause of something, especially a problem or fault