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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:

The study, published in European Urology Oncology, was led by the University of Birmingham and a diagnostics company Nonacus, and involved nearly 1,000 patients at seven hospitals in England and Scotland.

From BBC Sep. 2, 2026

Siemens Healthineers SHL -0.91%decrease; red down pointing triangle cut its full-year outlook for revenue growth, citing a weak performance in its diagnostics segment, but raised its guidance for adjusted earnings due to U.S. tariff refunds.

From The Wall Street Journal Jul. 31, 2026

“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

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

"But all we have left is the wait. Your work schedules are cleared. All scientific experiments are suspended. Sleep if you can, run diagnostics on your equipment if you can't."

From "The Martian" by Andy Weir

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