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
Adam Rodman, STAT, 3 May 2024
Following the success of its COVID-19 molecular test — its primary source of revenue — Cue has made efforts to expand its diagnostic testing menu and health technology platform.
—Natallie Rocha, San Diego Union-Tribune, 2 May 2024
See all Example Sentences for diagnostic 
Adjective
But the mere process of considering other options can help reduce diagnostic errors.
—Adam Rodman, STAT, 3 May 2024
Following the success of its COVID-19 molecular test — its primary source of revenue — Cue has made efforts to expand its diagnostic testing menu and health technology platform.
—Natallie Rocha, San Diego Union-Tribune, 2 May 2024
See all Example Sentences for diagnostic
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'diagnostic.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near diagnostic
Cite this Entry
“Diagnostic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diagnostic. Accessed 8 May. 2024.
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