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Synonyms

diagnostics

American  
[dahy-uhg-nos-tiks] / ˈdaɪ əgˈnɒs tɪks /

noun

(used with a singular verb)
  1. the discipline or practice of diagnosis.


diagnostics British  
/ ˌdaɪəɡˈnɒstɪks /

noun

  1. (functioning as singular) the art or practice of diagnosis, esp of diseases

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of diagnostics

First recorded in 1660–70; see origin at diagnostic, -ics

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

“AI-driven drug discovery, clinical development and diagnostics are beginning to improve productivity across the sector, while life science tools appear to be emerging from a multiyear destocking cycle.”

From MarketWatch Jul. 15, 2026

"Innovations in imaging hardware have the potential to transform diagnostics, and this study is an important step toward next-generation MRI technology," says Dr. Ebba Beller, a co-author of the paper at Rostock University Medical Center.

From Science Daily Jul. 10, 2026

Synthetic DNA is essential for many areas of modern science and medicine, including diagnostics, genome engineering, and cancer research.

From Science Daily Jul. 9, 2026

The gene-sequencing platform, alongside new mass-spectrometry and glucose-monitoring products- mean Roche’s diagnostics business is at its most important inflection point in 25 years, the analysts say in a research note.

From The Wall Street Journal Jun. 30, 2026

I ran both through full diagnostics to confirm they were working correctly.

From "The Martian" by Andy Weir

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