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
The only sign of emotion from him at sentencing came when the judge mentioned one of his daughters, who was in the process of being diagnosed with a life-changing medical condition.
—Simon Hughes, New York Times, 11 July 2025
The film’s superstitious heroine, AP (Sriram), is having her fortune told by a psychic in flowing robes and a matching huge headpiece (a delicious cameo from Big Freedia), who diagnoses the curse and the $1,000 solution to reverse it.
—Murtada Elfadl, Variety, 11 July 2025
Yungblud is postponing his Liverpool show due to being diagnosed with tonsillitis
The musician was set to perform at The Dome in Liverpool on Friday, July 11
Fans were given free drinks as compensation
Yungblud is postponing his show for health reasons — but leaving fans with a gift.
—Gabrielle Rockson, People.com, 11 July 2025
Duties can range from diagnosing and treat mental health issues to planning treatment programs and supervising staff who help provide care.
—Sacbee.com, 11 July 2025
See All Example Sentences for diagnose
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Simon Hughes, New York Times, 11 July 2025
The film’s superstitious heroine, AP (Sriram), is having her fortune told by a psychic in flowing robes and a matching huge headpiece (a delicious cameo from Big Freedia), who diagnoses the curse and the $1,000 solution to reverse it.
—Murtada Elfadl, Variety, 11 July 2025
Yungblud is postponing his Liverpool show due to being diagnosed with tonsillitis
The musician was set to perform at The Dome in Liverpool on Friday, July 11
Fans were given free drinks as compensation
Yungblud is postponing his show for health reasons — but leaving fans with a gift.
—Gabrielle Rockson, People.com, 11 July 2025
Duties can range from diagnosing and treat mental health issues to planning treatment programs and supervising staff who help provide care.
—Sacbee.com, 11 July 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 18 Jul. 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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