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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.

"Our results show that genetic diagnostics and functional neuroscience are not mutually exclusive areas," says Weber.

From Science Daily • Jun. 13, 2026

The researchers believe the technology could eventually lead to portable and affordable devices for detecting environmental pollutants, identifying hidden defects in materials, and performing medical diagnostics.

From Science Daily • Jun. 4, 2026

Restructuring at some of the biggest pharmaceutical companies following the pandemic has challenged the industry for life-science tools and diagnostics products.

From The Wall Street Journal • May 18, 2026

The accompanying Cosmos software allows customers to run diagnostics and telemetry to check on their systems, Mohan added.

From MarketWatch • May 5, 2026

I spent the last several days running full diagnostics on everything.

From "The Martian" by Andy Weir

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