Other forms: diagnosed, diagnoses, diagnosing
To diagnose is to work out what illness or fault is present. Diagnose the condition, correctly diagnosed, hard to diagnose.
The person is diagnosed with a condition and the condition is diagnosed in a person, which people mix up constantly. A diagnosis is a judgement made on evidence, so it can be revised, and a second opinion is not an insult to the first.
1verbdiagnoseTo work out what illness or fault is present.
“The doctor diagnosed her with diabetes after a simple blood test.”
diagnose is a determining.
Greek diagignoskein means to distinguish or discern — dia, apart, plus gignoskein, to know.
Back-formation from diagnosis. Compare also sclerose#Etymology.
Etymology from Wiktionary, CC BY-SA