diagnose
verb
di·ag·nose
ˈdī-ig-ˌnōs 
-ˌnōz,
ˌdī-ig-ˈnōs
-ˈnōz,
-əg-
diagnosed; diagnosing
1
a
: to recognize (something, such as a disease) by signs and symptoms
The other method of diagnosing gallstones is through an ultrasound examination, which has the advantages of being simple, safe and quick.—
G. Timothy Johnson
G. Timothy JohnsonPulmonary embolus was diagnosed in two of the actively treated patients …—Richard D. Sautter et al.
Richard D. Sautter et al.
b
: to recognize a disease or condition in
The physicist and cosmologist was diagnosed with Lou Gehrig's disease when he was a 21-year-old student at Cambridge University.—Maria Cheng
Maria Cheng2
: to analyze the cause or nature of
The mechanic diagnosed the problem with the engine.
: to identify a disease from its signs and symptoms : to make a diagnosis
Examples of diagnose in a Sentence
The test is used to help in diagnosing heart disease.
Thousands of new cases have been diagnosed in the past year.
The doctor was unable to diagnose the skin condition.
a new doctor with little experience diagnosing patients
The mechanic was unable to diagnose the problem.
Recent Examples on the Web
So when Andreini was diagnosed with stage 4 breast cancer in 2013, Arneson was devastated.
—Jordan Greene, People.com, 23 May 2025
In fact, research shows that people of color have a harder time getting correctly diagnosed with or sufficiently treated for eczema than white individuals.
—Lynya Floyd, Allure, 23 May 2025
However, the chance of an HSV-1 diagnosis was 80% higher in those diagnosed with Alzheimer’s, according to the research.
—Khloe Quill, FOXNews.com, 23 May 2025
Then, her grandmother died unexpectedly a few months after being diagnosed with cancer, and Brodsky was once again personally reminded of how broken the system is.
—Ginger Gentile, Forbes.com, 23 May 2025
See All Example Sentences for diagnose
Examples are automatically compiled from online sources to
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
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Jordan Greene, People.com, 23 May 2025
In fact, research shows that people of color have a harder time getting correctly diagnosed with or sufficiently treated for eczema than white individuals.
—Lynya Floyd, Allure, 23 May 2025
However, the chance of an HSV-1 diagnosis was 80% higher in those diagnosed with Alzheimer’s, according to the research.
—Khloe Quill, FOXNews.com, 23 May 2025
Then, her grandmother died unexpectedly a few months after being diagnosed with cancer, and Brodsky was once again personally reminded of how broken the system is.
—Ginger Gentile, Forbes.com, 23 May 2025
See All Example Sentences for diagnose
Cite this Entry
“Diagnose.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diagnose. Accessed 5 Jun. 2025.
Copy CitationKids Definition
diagnose
verb
di·ag·nose
ˈdī-ig-ˌnōs
-ˌnōz
-ˌnōz
ˌdī-ig-ˈnōs,
-ˈnōz
diagnosed; diagnosing
: to recognize by signs and symptoms : make a diagnosis
diagnose a disease
diagnose a play in football
Medical Definition
diagnose
verb
di·ag·nose
ˈdī-ig-ˌnōs
-ˌnōz
-ˌnōz
ˌdī-ig-ˈ,
-əg-
diagnosed; diagnosing
1
: to recognize (as a disease) by signs and symptoms
2
: to diagnose a disease or condition in
diagnosed the patient
: to make a diagnosis
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