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diagnostic

adjectivenounattested in dialogue

  • United Kingdom//daɪ.əɡˈnɒs.tɪk//
  • United States//ˌdaɪ.əɡˈnɑ.stɪk//
  • Canada//ˌdaɪ.əɡˈnɒs.tɪk//
  • Australia//dɑe.əɡˈnɔs.tɪk//

Of, or relating to diagnosis.

adjective

  1. 1

    Of, or relating to diagnosis.

  2. 2

    Characteristic of a particular disease.

  3. 3

    Serving to indicate or specify a particular item or thing within a group of similar things.

    Each language has its own distinct phonological qualities which a counter can tap into with effect. It is not necessarily specific phonemes (though these can sometimes be diagnostic), but rather the frequency and phonotactic distribution of each disparate set of phonemes that go together in the speech stream in certain recognisable ways.

  4. 4

    Intended to assess a student's preexisting knowledge on the material being taught.

    A diagnostic assessment

  5. 5

    Characteristic of a particular taxon or clade.

Etymology

Etymology tree Proto-Indo-European *dwóh₁ 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 -τις (-tis) 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”).

noun

  1. 1

    Any technique used in medical diagnosis.

  2. 2

    Any tool or technique used to find the root of a problem.

  3. 3

    That by which anything is known; a symptom.

Forms

plural
diagnostics
comparative
more diagnostic
superlative
most diagnostic
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).