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diagnosis

Pronunciation: /ˌdʌɪəgˈnəʊsɪs/

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Definition of diagnosis

noun (plural diagnoses /-siːz/)

[mass noun]
  • 1the identification of the nature of an illness or other problem by examination of the symptoms:early diagnosis and treatment are essential [count noun]:a diagnosis of Crohn’s disease was made
  • 2the distinctive characterization in precise terms of a genus, species, or phenomenon.

Origin:

late 17th century: modern Latin, from Greek, from diagignōskein 'distinguish, discern', from dia 'apart' + gignōskein 'recognize, know'

Spelling rule

Make the plural of diagnosis by changing the -is ending to -es: (diagnoses).

diagnosis in other Oxford dictionaries

Definition of diagnosis in the US English dictionary

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