diagnostic

adjective
di·​ag·​nos·​tic | \-ˈnäs-tik \
variants: or less commonly diagnostical \-​ti-​kəl \

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

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Other Words from diagnostic

Adjective

diagnostically \-​ti-​k(ə-​)lē \ adverb

Noun

diagnostician \-​(ˌ)näs-​ˈti-​shən \ 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
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Recent Examples on the Web: Adjective

Mars even expanded its bet on the pet industry, last year paying $7.7 billion excluding debt for VCA Inc., a network of 800 animal hospitals, veterinary diagnostic labs and dog day-care centers. Annie Gasparro, WSJ, "Pets or People, Big Food Faces the Same Supermarket Battle," 12 Nov. 2018 In an odd twist of neurology, and to the diagnostic confusion of doctors, people can have migraines without headaches. Tony Dajer, Discover Magazine, "Vertigo, Panic and Trouble Breathing: What's Going On Here?," 19 Oct. 2018 The only behavior classified as an addiction in the American Psychiatric Association’s diagnostic manual is compulsive gambling. Washington Post, "Science Says: What makes something truly addictive," 21 June 2018 The current psychiatric diagnostic manual has abandoned hypochondria as a disorder, replacing it in 2013 with two new concepts: somatic symptom disorder and illness anxiety disorder. New York Times, "A New Approach to Treating Hypochondria," 18 June 2018 The American Psychiatric Association added the term to its diagnostic manual in 2013 to distinguish between the condition of being transgender and symptoms that arise from distress over being transgender. Emanuella Grinberg, CNN, "What is medically necessary treatment for gender-affirming health care?," 31 May 2018 The operating rooms are big — 300 square feet each, with ample empty space surrounding the operating table, anesthesiology equipment, various light and power sources and diagnostic equipment, and flat-screen monitors. Ron Hurtibise, Sun-Sentinel.com, "Cleveland Clinic readies new $53 million Coral Springs Family Health Center," 13 July 2018 The center — one of six U.S. sites participating in the trial — is seeking toddlers ages 16 to 30 months to test the effectiveness of eye-tracking technology as a diagnostic tool. Maria Polletta, azcentral, "Could a Phoenix center's research change how autism is diagnosed?," 2 July 2018 Media: Wibbitz There is no diagnostic test for the virus, which is carried by a species of mosquito — Aedes atlanticus, a cousin of Aedes aegypti — found mostly near water and wooded areas. Todd Ackerman, Houston Chronicle, "Texas officials downplay health threat from little-known mosquito-borne virus that caused symptoms in teen," 23 June 2018

Recent Examples on the Web: Noun

Bionano’s Saphyr system detects large-scale structural variations in DNA and can be used to uncover drug targets, develop diagnostics and study changes in chromosomes, according to the company. Brian Gormley, WSJ, "Biotech Instrument Maker Bionano Genomics Bucks Trend in $20.6 Million IPO," 21 Aug. 2018 The new carriers use advanced algorithms to perform diagnostics and other on-board maintenance and procedural tasks independently. Kris Osborn, Fox News, "Pentagon makes massive new AI push for tanks, ships, weapons, drones and networks," 19 July 2018 With the advent of smartphones, there are lots of ways to diagnose your car, but none are as easy as an OBD-II diagnostic tool. Popular Mechanics Editors, Popular Mechanics, "Become a Car Doctor With Amazon's OBD Scanner Sale," 31 July 2018 Now Dorman was starting a new company in a new field, aiming at disease diagnostics. Adam Rogers, WIRED, "The Man Who Says Science Blew Its Best Shot at an AIDS Vaccine," 1 June 2018 Her mother, who is retired, worked in the Philadelphia area as a medical diagnostics sales representative for the Cytyc Corporation, a women’s health care company. New York Times, "Amanda Zeiger, Jesse Reich," 22 Apr. 2018 In 1950, York, a co-leader with Dr. Hugh Bradner, undertook the design and execution of a major diagnostics experiment for Operation Greenhouse at Eniwetok Proving Ground. sandiegouniontribune.com, "York named UC San Diego Chancellor," 18 Feb. 2018 That’s what’s behind all the cartridges, containers, and cards lots of diagnostics companies use. Adam Rogers, WIRED, "Theranos Didn't Nuke the Diagnostics Business," 15 Mar. 2018 Top biotech investors had licensed some of its research to launch a high-profile cancer diagnostic and therapeutics company, backed by more than $80 million. Andrew Joseph, STAT, "Houston aspires to become the ‘third coast’ of biotech. Can it pull it off?," 29 Mar. 2018

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.

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First Known Use of diagnostic

Adjective

1625, in the meaning defined at sense 1a

Noun

1625, in the meaning defined at sense 1

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Statistics for diagnostic

Last Updated

17 Nov 2018

Look-up Popularity

Time Traveler for diagnostic

The first known use of diagnostic was in 1625

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More Definitions for diagnostic

diagnostic

adjective

English Language Learners Definition of diagnostic

: of, relating to, or used in diagnosis : used to help identify a disease, illness, or problem

diagnostic

adjective
di·​ag·​nos·​tic | \-ˈnäs-tik \
variants: also diagnostical \-​ti-​kəl \

Medical Definition of diagnostic 

(Entry 1 of 2)

1 : of, relating to, or used in diagnosis

2 : using the methods of or yielding a diagnosis a diagnostic service diagnostic properties

Other Words from diagnostic

diagnostically \-​ti-​k(ə-​)lē \ adverb

diagnostic

noun

Medical Definition of diagnostic (Entry 2 of 2)

: the art or practice of diagnosis often used in plural

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