Meanings
present singular third person diagnoses · participle present diagnosing · participle past diagnosed · past diagnosed
- broadlyTo determine the cause of a problem.
Mechanics use this extremely portable tool to diagnose engine faults, clear fault codes, and export data.
2002, John J. Schiavone, Training for On-board Bus Electronics, page 191 more example
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.
1962 October, M. J. Wilson, “Three years of dieselisation at Devons Road depot”, in Modern Railways, pages 262, 264
Synonyms & antonyms
verbdetermine or distinguish the nature of a problem or an illness through a diagnostic analysis
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
- Proto-Indo-European*dwóh₁
- Proto-Indo-European*trísinflu.
- Proto-Indo-European*dwís
- Ancient Greekδιά (diá)
- Ancient Greekδια- (dia-)
- Proto-Indo-European*ǵneh₃-
- Proto-Indo-European*ǵn̥h₃sḱéti
- Proto-Hellenic*gignṓskō
- Ancient Greekγῐγνώσκω (gĭgnṓskō)
- Ancient Greekδῐαγῐγνώσκω (dĭagĭgnṓskō)
- Ancient Greekδῐᾰ́γνωσῐς (dĭắgnōsĭs)
- Latindiagnōsis
- Englishdiagnosisbf.
- Englishdiagnose
Back-formation from diagnosis. Compare also sclerose (verb).
Full word history & related roots →Translations
Ancient Greek διαγιγνώσκω
- διαγιγνώσκω (diagignṓskō)determine the root cause of
Arabic شَخَّصَ
- شَخَّصَ (šaḵḵaṣa)determine the root cause of
Bulgarian диагностици́рам
- диагностици́рам (diagnosticíram)determine the root cause of
Catalan diagnosticar
- diagnosticardetermine the root cause of
Chinese Mandarin 診斷 /诊断
- 診斷 /诊断 (zhěnduàn)determine the root cause of
Czech diagnostikovat
- diagnostikovatdetermine the root cause of
Danish diagnosticere
- diagnosticeredetermine the root cause of
Dutch diagnosticeren
- diagnosticerendetermine the root cause of
Esperanto diagnozi
- diagnozidetermine the root cause of
Finnish diagnosoida
- diagnosoidadetermine the root cause of
French diagnostiquer
- diagnostiquerdetermine the root cause of
German diagnostizieren
- diagnostizierendetermine the root cause of
Greek διαγιγνώσκω
- διαγιγνώσκω (diagignósko)determine the root cause of
Hebrew אבחן
- אבחן (ivkhén)determine the root cause of
Hungarian diagnosztizál
- diagnosztizáldetermine the root cause of
Italian diagnosticare
- diagnosticaredetermine the root cause of
Japanese 診断する
- 診断する (shindan suru)determine the root cause of
Korean 진단
- 진단 (jindan)determine the root cause of
Latin diagnōsticō
- diagnōsticōdetermine the root cause of
Latvian diagnosticēt
- diagnosticētdetermine the root cause of
Māori tautuhi, tautohu
- tautuhidetermine the root cause of
- tautohudetermine the root cause of
Polish diagnozować
- diagnozowaćdetermine the root cause of
Portuguese diagnosticar
- diagnosticardetermine the root cause of
Romanian diagnostica
- diagnosticadetermine the root cause of
Russian диагности́ровать
- диагности́ровать (diagnostírovatʹ)determine the root cause of
Spanish diagnosticar
- diagnosticardetermine the root cause of
Swedish diagnostisera
- diagnostiseradetermine the root cause of
Thai วินิจฉัย
- วินิจฉัย (wí-nít-chǎi)determine the root cause of
Turkish tanılamak, tanı koymak
- tanılamakdetermine the root cause of
- tanı koymakdetermine the root cause of
- saptamakdetermine the root cause of
- teşhis etmekdetermine the root cause of
Ukrainian діагностува́ти
- діагностува́ти (diahnostuváty)determine the root cause of
Urdu تشخیص کرنا
- تشخیص کرنا (taśxīs karnā)determine the root cause of
Vietnamese chẩn đoán
- chẩn đoándetermine the root cause of
Rhymes & wordplay
Rhymes with diagnose
Anagrams
Cite this entry
diagnose. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/diagnose
“diagnose.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/diagnose. Accessed November 2, 2026.
WatkinsX Dictionary, s.v. “diagnose,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/diagnose.
Source: diagnose on Wiktionary, CC BY-SA 4.0.