di·ag·nos·tic
ˌdī-ig-ˈnä-stik 
-əg-
variants
or less commonly diagnostical
ˌdī-ig-ˈnä-sti-kəl
-əg-
1
a
: of, relating to, or used in diagnosis
a diagnostic tool
b
: using the methods of or yielding a diagnosis
diagnostic tests
2
: serving to distinguish or identify
a diagnostic feature
Synonyms
Examples of diagnostic in a Sentence
Adjective
Ultrasound is now widely used as a diagnostic tool.
One important diagnostic feature of this condition is a mild rash.
Noun
the thesis that moral decline is the infallible diagnostic of a decadent society
Recent Examples on the Web
Evan Bush, NBC News, 6 Feb. 2025
Testing company Everly Health in 2021 bought three companies: diagnostic clinician network PWNHealth, lab test provider Home Access Health and fertility startup Natalist.
—Erin Brodwin, Axios, 5 Feb. 2025
Zev Fima, CNBC, 29 Jan. 2025
Founded in 2021, Lindus Health has operated 42 trials across psychiatry, diagnostics and respiratory health.
—Aaron Weitzman, Axios, 22 Jan. 2025
See all Example Sentences for diagnostic 
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Adjective
The diagnostic aid is still early in its development, and data supporting its effectiveness is limited.
—Evan Bush, NBC News, 6 Feb. 2025
Testing company Everly Health in 2021 bought three companies: diagnostic clinician network PWNHealth, lab test provider Home Access Health and fertility startup Natalist.
—Erin Brodwin, Axios, 5 Feb. 2025
Noun
Biotechnology core revenue is expected to increase 6% to 7% Meanwhile, core revenue for both the life sciences and diagnostics segments is expected to be down mid-single-digit percentage points.
—Zev Fima, CNBC, 29 Jan. 2025
Founded in 2021, Lindus Health has operated 42 trials across psychiatry, diagnostics and respiratory health.
—Aaron Weitzman, Axios, 22 Jan. 2025
See all Example Sentences for diagnostic
Dictionary Entries Near diagnostic
Cite this Entry
“Diagnostic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diagnostic. Accessed 13 Feb. 2025.
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