diagnose

[dahy-uhg-nohs, -nohz, dahy-uhg-nohs, -nohz]

verb (used with object)

diagnosed, diagnosing 

1. to determine the identity of (a disease, illness, etc.) by a medical examination.

   The doctor diagnosed the illness as influenza.

2. to ascertain the cause or nature of (a disorder, malfunction, problem, etc.) from the symptoms.

   The mechanic diagnosed the trouble that caused the engine knock.

3. to classify or determine on the basis of scientific examination.

verb (used without object)

diagnosed, diagnosing 

1. to make a diagnosis.

diagnose

/ ˈdaɪəɡˌnəʊz /

verb

1. to determine or distinguish by diagnosis

2. (tr) to examine (a person or thing), as for a disease

Other Word Forms

• diagnosable adjective
• underdiagnose verb (used with object)
• undiagnosable adjective
• undiagnosed adjective
• well-diagnosed adjective

Word History and Origins

Origin of diagnose¹

First recorded in 1860–65; back formation from diagnosis

Example Sentences

She added that Kai had been diagnosed with mild ADHD, and as part of that condition, other peoples' opinions really mattered to him.

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“I know, I know,” he said, having already diagnosed the problem on his own.

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Two Margate women who were diagnosed with breast cancer are urging people to understand the symptoms and have the courage to stand up for themselves if their concerns have been disregarded by doctors.

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Once upon a time, my wife’s uncle, Jim, delivered babies, set broken bones, diagnosed diseases, and helped people reconcile themselves to mortality.

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Mr Saddiq told BBC Radio's Good Morning Scotland programme: "Following my assault I suffered severe mental health issues, I was diagnosed with PTSD, I had stress, anxiety, sleep disturbances, constant flashbacks for many years."

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Related Words

• analyze 
• determine 
• investigate 
• pinpoint 
• pronounce 
• recognize