Diagnosis
noun /ˌdaɪ.əɡˈnoʊ.sɪs/ — The identification of a disease or condition from symptoms and signs.
Definition
The process of identifying a disease, injury, or condition by examining symptoms, test results, and patient history. A diagnosis gives a name to what is happening in the body — which is simultaneously a comfort (knowledge) and a weight (label).
Beyond the definition
A diagnosis is the moment the unknown becomes named. For some, it is a relief — there is a word for this, and where there is a word there may be a path. For others, it is the wall itself.
Origin & history
From Greek 'diagnosis' (a distinguishing); from 'dia-' (through) + 'gignoskein' (to know). To know thoroughly, to distinguish by knowing.
Example sentences
Illustrative sentences for learning, not verified community posts or sourced quotations.
The diagnosis came after four years of being told there was nothing wrong — finding the name felt like being given permission to be ill.
A differential diagnosis lists multiple possible conditions before evidence eliminates them one by one.
He received his diagnosis alone, in a paper gown, and drove home through traffic, the word sitting with him in the car.
How to use it
This entry uses a noun. Follow the examples for articles and singular or plural forms; not every noun takes “a” or “an.”
Choose “Diagnosis” when the meaning fits your context: The process of identifying a disease, injury, or condition by examining symptoms, test results, and patient history. A diagnosis gives a name to what is happening in the body — which is simultaneously a comfort (knowledge) and a weight (label).
Synonyms
identification, assessment, clinical judgment
Related words
Diagnosis vs prognosis
A diagnosis identifies a specific condition or disease based on current symptoms. A prognosis is the predicted course or outcome of that condition as it develops over time.
Compare this word
Word in the Wild
See how this word appears in life, language and stories.
Illustrative sentences and imagined stories for learning — not verified sightings, interviews, or sourced quotations.
Fictional scene
Careful Clinical Examination Process
A clinician uses a stethoscope on a patient while anatomical models rest on the table nearby.
This image depicts the clinical examination process, which is the foundational step of a diagnosis. It highlights the structured observation of a patient's physical state, serving as the essential method for identifying specific conditions rather than the internal label itself.
Image credit: Wordspun · AI-generated conceptual illustration
Questions about this word
What does "Diagnosis" mean?
Diagnosis is noun meaning: The identification of a disease or condition from symptoms and signs.. The process of identifying a disease, injury, or condition by examining symptoms, test results, and patient history. A diagnosis gives a name to what is happening in the body — which is simultaneously a comfort (knowledge) and a weight (label).
Where does the word "Diagnosis" come from?
From Greek 'diagnosis' (a distinguishing); from 'dia-' (through) + 'gignoskein' (to know). To know thoroughly, to distinguish by knowing.