diagnosis
noun
di·ag·no·sis
ˌdī-ig-ˈnō-səs 
-əg-
plural diagnoses
ˌdī-ig-ˈnō-ˌsēz
-əg-
1
a
: the art or act of identifying a disease from its signs and symptoms
b
: the decision reached by diagnosis
the doctor's diagnosis
2
a
: investigation or analysis of the cause or nature of a condition, situation, or problem
diagnosis of engine trouble
b
: a statement or conclusion from such an analysis
3
biology
: a concise technical description of a taxon
Examples of diagnosis in a Sentence
The unusual combination of symptoms made accurate diagnosis difficult.
She is an expert in the diagnosis and treatment of eye diseases.
The diagnosis was a mild concussion.
His doctor made an initial diagnosis of pneumonia.
The committee published its diagnosis of the problems affecting urban schools.
Recent Examples on the Web
At first, Tyrion's owner was devastated with her dog's diagnosis.
—
Saman Shafiq, USA Today, 20 Apr. 2025
Cole maintained his cancer diagnosis for J.B. was correct, despite the lawsuit and another review of the slides since his initial diagnosis, the filing alleged.
—Kyle Pfannenstiel, Idaho Statesman, 18 Apr. 2025
Teddi Mellencamp is opening up about the toll her diagnosis is taking on her little ones.
—Kayla Grant, People.com, 18 Apr. 2025
Prostate Cancer Survival Rates and Statistics Coping Coping with a diagnosis of castration-resistant prostate cancer can be challenging in many ways—physically, mentally, emotionally, financially, and logistically.
—Matthew Wosnitzer, Verywell Health, 18 Apr. 2025
See All Example Sentences for diagnosis
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Saman Shafiq, USA Today, 20 Apr. 2025
Cole maintained his cancer diagnosis for J.B. was correct, despite the lawsuit and another review of the slides since his initial diagnosis, the filing alleged.
—Kyle Pfannenstiel, Idaho Statesman, 18 Apr. 2025
Teddi Mellencamp is opening up about the toll her diagnosis is taking on her little ones.
—Kayla Grant, People.com, 18 Apr. 2025
Prostate Cancer Survival Rates and Statistics Coping Coping with a diagnosis of castration-resistant prostate cancer can be challenging in many ways—physically, mentally, emotionally, financially, and logistically.
—Matthew Wosnitzer, Verywell Health, 18 Apr. 2025
See All Example Sentences for diagnosis
Cite this Entry
“Diagnosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diagnosis. Accessed 23 Apr. 2025.
Copy CitationKids Definition
diagnosis
noun
di·ag·no·sis
ˌdī-ig-ˈnō-səs
plural diagnoses
-ˈnō-ˌsēz
1
a
: the art or act of identifying a disease from its signs and symptoms
b
: the decision reached by diagnosis
2
a
: a careful study of something especially to determine its nature or importance
b
: the conclusion reached after a study or examination
Medical Definition
diagnosis
noun
di·ag·no·sis
ˌdī-ig-ˈnō-səs, -əg-
plural diagnoses
-ˌsēz
1
a
: the art or act of identifying a disease from its signs and symptoms
b
: the decision reached by diagnosis
a diagnosis of pneumonia
2
: a concise technical description of a taxon
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