diagnostic

adjective
di·​ag·​nos·​tic | \ ˌdī-ig-ˈnä-stik How to pronounce diagnostic (audio) , -əg-\
variants: or less commonly diagnostical \ ˌdī-​ig-​ˈnä-​sti-​kəl How to pronounce diagnostical (audio) , -​əg-​ \

Definition of diagnostic

 (Entry 1 of 2)

1a : 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

diagnostic

noun

Definition of diagnostic (Entry 2 of 2)

1 : the art or practice of diagnosis often used in plural
2 : a distinguishing mark

Keep scrolling for more

Other Words from diagnostic

Adjective

diagnostically \ ˌdī-​ig-​ˈnä-​sti-​k(ə-​)lē How to pronounce diagnostically (audio) , -​əg-​ \ adverb

Noun

diagnostician \ ˌdī-​ig-​(ˌ)nä-​ˈsti-​shən How to pronounce diagnostician (audio) , -​əg-​ \ noun

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
See More

Recent Examples on the Web: Adjective

Take the Netflix app, for example: Mobile Enerlytics, a company that makes battery use diagnostic tools for app makers, recently found that Netflix could drain 20 percent of your phone’s charge overnight just by running in the background. Joe Lindsey, Popular Mechanics, "These 3 Simple Things Will Make Your Phone's Battery Last Longer," 28 May 2019 But more immediately, a partial solution would be the development of quick, cheap diagnostic tools that would allow an instant urine culture so that a doctor could prescribe the right drug for U.T.I.s. Matt Richtel, New York Times, "Urinary Tract Infections Affect Millions. The Cures Are Faltering.," 6 Apr. 2019 But doctors said the potential false positives and other aspects of the study show that people should be cautious about relying on the technology as diagnostic tools. ... Peter Loftus, WSJ, "Apple Watch Has Mixed Results in Big Heart Study," 16 Mar. 2019 Large, multi-drawer tool chests sit alongside more complicated diagnostic equipment. Rex Crum, The Mercury News, "Tesla, Evergreen Valley College partner to give students a START on their careers," 2 Aug. 2019 But more immediately, a partial solution would be the development of quick, cheap diagnostic tools that would allow an instant urine culture so a doctor could prescribe the right drug for UTIs. Matt Richtel, BostonGlobe.com, "Common infection builds defenses and puts millions at risk," 13 July 2019 Current diagnostic tools for Alzheimer’s, the most common form of dementia, can confirm the build-ups of misshapen amyloid-beta or tau, the hallmarks of the condition. Katherine Ellen Foley, Quartz, "Scientists may have found a better way to spot early signs of dementia: our eyes," 11 July 2019 The company, which also operates divisions that make medical diagnostic equipment and electronic components, closed Friday $117.03 a share, a record high. Ronald D. White, latimes.com, "This Hawthorne company finds security in border protection," 6 July 2019 Cries can also be used as preliminary diagnostic tools for problems like chromosomal abnormalities, or simply to identify common issues like colic. Emily Matchar, Smithsonian, "A Translator for Baby Cries? Yes, Please.," 2 July 2019

Recent Examples on the Web: Noun

Initially, doctors believed his Achilles tendon was about to rupture but further diagnostics showed that a small piece of bone had broken off the back of his foot was getting pinches in the joint. Jim Ayello, Indianapolis Star, "Ex-Colts lineman Ryan Diem's injury could shed light on Andrew Luck's prognosis," 13 Aug. 2019 Experts at Wageningen University and the biotech company KeyGene, both in the Netherlands, used genome sequencing and molecular diagnostics to confirm the TR4 diagnosis in infected plant samples from Colombia. Sabine Galvis, Science | AAAS, "Colombia confirms that dreaded fungus has hit its banana plantations," 12 Aug. 2019 The babies of the fertility business offer diagnostics. The Economist, "The fertility business is booming," 8 Aug. 2019 The contract also will provide RTA with turn-by-turn navigation services, real-time location tracking and diagnostics showing when a vehicle is about to break down. Courtney Astolfi, cleveland.com, "RTA trains, buses could have free Wi-Fi by next year," 4 June 2019 The service will bring 4G cellular data to RTA trains and buses, which will be used to provide Wi-Fi for passengers and will power real-time location and vehicle diagnostics, messaging and turn-by-turn navigation for RTA staff. Courtney Astolfi, cleveland.com, "RTA board approves free passenger Wi-Fi," 18 June 2019 Physician patients received unnecessary pre-surgical diagnostic tests nearly 20% of the time, less than non-physicians but still much too often. Michael Hiltzik, latimes.com, "Doctors aren’t much better at picking the best medical treatments than laypersons," 8 July 2019 The division, which includes the Genentech subsidiary, generates around three-quarters of Roche’s total revenue, with the rest coming from its diagnostics business. Denise Roland, WSJ, "Roche Taps Genentech Chief to Lead Pharmaceuticals Division," 10 Dec. 2018 Today’s mechanics must be proficient with computer diagnostics and use of tools. Ron Hurtibise, sun-sentinel.com, "Auto mechanic shortage prompts hiring call from AutoNation," 24 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'diagnostic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of diagnostic

Adjective

1625, in the meaning defined at sense 1a

Noun

1625, in the meaning defined at sense 1

Keep scrolling for more

Keep scrolling for more

More Definitions for diagnostic

diagnostic

a