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
When mami was diagnosed with breast cancer in May, Mrs. J. called and continued checking in.
—Yesika Salgado, Los Angeles Times, 24 Jan. 2025
Over a year after Isabella Strahan, now 20, was diagnosed with an aggressive brain cancer, her dad, Good Morning America co-anchor Michael Strahan, still remembers the words his colleague, Robin Roberts, also a cancer survivor, once told him.
—Liz McNeil, People.com, 24 Jan. 2025
Those communities offering memory care are doing a good job of staying abreast of incremental discoveries about how to offer the best environment for those who have been diagnosed with this condition.
7.
—Sara Zeff Geber, Phd, Forbes, 23 Jan. 2025
As 1st bird flu death reported in US, what could happen with virus in 2025?
Human cases have been diagnosed across the country since April 2024, with 67 confirmed in 10 states so far, according to the Centers for Disease Control and Prevention.
—Mary Kekatos, ABC News, 23 Jan. 2025
See all Example Sentences for diagnose 
Examples are automatically compiled from online sources to
show current usage.
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Yesika Salgado, Los Angeles Times, 24 Jan. 2025
Over a year after Isabella Strahan, now 20, was diagnosed with an aggressive brain cancer, her dad, Good Morning America co-anchor Michael Strahan, still remembers the words his colleague, Robin Roberts, also a cancer survivor, once told him.
—Liz McNeil, People.com, 24 Jan. 2025
Those communities offering memory care are doing a good job of staying abreast of incremental discoveries about how to offer the best environment for those who have been diagnosed with this condition.
7.
—Sara Zeff Geber, Phd, Forbes, 23 Jan. 2025
As 1st bird flu death reported in US, what could happen with virus in 2025?
Human cases have been diagnosed across the country since April 2024, with 67 confirmed in 10 states so far, according to the Centers for Disease Control and Prevention.
—Mary Kekatos, ABC News, 23 Jan. 2025
See all Example Sentences for diagnose
Articles Related to diagnose
Dictionary Entries Near diagnose
Cite this Entry
“Diagnose.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diagnose. Accessed 27 Jan. 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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