diagnostic.
Of, or relating to diagnosis.
Meaning & usage
Of, or relating to diagnosis.
Characteristic of a particular disease.
Serving to indicate or specify a particular item or thing within a group of similar things.
Intended to assess a student's preexisting knowledge on the material being taught.
A diagnostic assessment
Characteristic of a particular taxon or clade.
Where this word comes from
Etymology tree Proto-Indo-European *dwóh₁ ▲ Proto-Indo-European *trísinflu. Proto-Indo-European *dwísder. Ancient Greek διά (diá) Ancient Greek δια- (dia-) Proto-Indo-European *ǵneh₃- Proto-Indo-European *-sḱéti Proto-Indo-European *ǵn̥h₃sḱétider. Proto-Hellenic *gignṓskō Ancient Greek γῐγνώσκω (gĭgnṓskō) Ancient Greek δῐαγῐγνώσκω (dĭagĭgnṓskō) Proto-Indo-European *-tis Proto-Hellenic *-tis Ancient Greek -τῐς (-tĭs) Ancient Greek -σῐς (-sĭs) Ancient Greek δῐᾰ́γνωσῐς (dĭắgnōsĭs) ▲ Ancient Greek -σῐς (-sĭs) Proto-Indo-European *-kos Proto-Hellenic *-kos Ancient Greek -κός (-kós) ? Proto-Indo-European *-tós Proto-Hellenic *-tós Ancient Greek -τος (-tos) ▲ Ancient Greek -κός (-kós) ? Ancient Greek -τῐκός (-tĭkós) ▲ Ancient Greek δῐᾰ- (dĭă-) Proto-Indo-European *ǵneh₃- Proto-Indo-European *-tis Proto-Indo-European *ǵneh₃tisder. Ancient Greek γνῶσις (gnôsis) ▲ Ancient Greek -τῐκός (-tĭkós) Ancient Greek γνωστῐκός (gnōstĭkós) Ancient Greek δῐαγνωστῐκός (dĭagnōstĭkós)bor. English diagnostic From Ancient Greek διαγνωστικός (diagnōstikós), adjective from διαγιγνώσκω (diagignṓskō, “to distinguish, diagnose”).
Any technique used in medical diagnosis.
Any tool or technique used to find the root of a problem.
That by which anything is known; a symptom.
Where this word comes from
Etymology tree Proto-Indo-European *dwóh₁ ▲ Proto-Indo-European *trísinflu. Proto-Indo-European *dwísder. Ancient Greek διά (diá) Ancient Greek δια- (dia-) Proto-Indo-European *ǵneh₃- Proto-Indo-European *-sḱéti Proto-Indo-European *ǵn̥h₃sḱétider. Proto-Hellenic *gignṓskō Ancient Greek γῐγνώσκω (gĭgnṓskō) Ancient Greek δῐαγῐγνώσκω (dĭagĭgnṓskō) Proto-Indo-European *-tis Proto-Hellenic *-tis Ancient Greek -τῐς (-tĭs) Ancient Greek -σῐς (-sĭs) Ancient Greek δῐᾰ́γνωσῐς (dĭắgnōsĭs) ▲ Ancient Greek -σῐς (-sĭs) Proto-Indo-European *-kos Proto-Hellenic *-kos Ancient Greek -κός (-kós) ? Proto-Indo-European *-tós Proto-Hellenic *-tós Ancient Greek -τος (-tos) ▲ Ancient Greek -κός (-kós) ? Ancient Greek -τῐκός (-tĭkós) ▲ Ancient Greek δῐᾰ- (dĭă-) Proto-Indo-European *ǵneh₃- Proto-Indo-European *-tis Proto-Indo-European *ǵneh₃tisder. Ancient Greek γνῶσις (gnôsis) ▲ Ancient Greek -τῐκός (-tĭkós) Ancient Greek γνωστῐκός (gnōstĭkós) Ancient Greek δῐαγνωστῐκός (dĭagnōstĭkós)bor. English diagnostic From Ancient Greek διαγνωστικός (diagnōstikós), adjective from διαγιγνώσκω (diagignṓskō, “to distinguish, diagnose”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.