Definition of diagnosis noun from the Oxford Advanced Learner's Dictionary

 

diagnosis

 noun
noun
BrE BrE//ˌdaɪəɡˈnəʊsɪs//
 
; NAmE NAmE//ˌdaɪəɡˈnoʊsɪs//
 
[countable, uncountable](pl. diagnoses
BrE BrE//ˌdaɪəɡˈnəʊsiːz//
 
; NAmE NAmE//ˌdaɪəɡˈnoʊsiːz//
 
)
Medical examinations
 
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diagnosis (of something) the act of discovering or identifying the exact cause of an illness or a problem diagnosis of lung cancer They are waiting for the doctor's diagnosis. An accurate diagnosis was made after a series of tests. See related entries: Medical examinations Word Origin late 17th cent.: modern Latin, from Greek, from diagignōskein ‘distinguish, discern’, from dia ‘apart’ + gignōskein ‘recognize, know’.Extra examples Further tests have confirmed the diagnosis. Patients may suffer from some of the symptoms years before diagnosis. The doctor cannot give a diagnosis without knowing the full medical history. They are using new methods of diagnosis. Without the results of the blood test, the doctor could only make a tentative diagnosis. a diagnosis of cancer clinical diagnosis of schizophrenia the diagnosis of the disease
See the Oxford Advanced American Dictionary entry: diagnosis