- (transitive, medicine) To determine which disease is causing a sick person's signs and symptoms; to find the diagnosis.
- (by extension) To determine the cause of a problem.
- 1962 October, M. J. Wilson, “Three years of dieselisation at Devons Road depot”, in Modern Railways, pages 262, 264:
- But in the early days of the scheme the new machines created some problems for the fitters, who found them over-complex and their faults hard to diagnose after many years' experience of small, simple steam locomotives.
- 2002, John J. Schiavone, Training for On-board Bus Electronics, page 19:
- Mechanics use this extremely portable tool to diagnose engine faults, clear fault codes, and export data.
- Some argue that to "diagnose [someone] with a disease" is an incorrect usage because the verb takes the physician as subject and a disease as object.
Borrowed from French diagnose. Ultimately from Latin diagnōsis, from Ancient Greek διάγνωσις (diágnōsis). This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term.
diagnose f (plural diagnoses)
- → Dutch: diagnose
- Superseded spelling of .
diagnose (plural diagnoses)