\ ˈkwȯrk How to pronounce quark (audio) , ˈkwärk How to pronounce quark (audio) \

Definition of quark

: any of several elementary particles that are postulated to come in pairs (as in the up and down varieties) of similar mass with one member having a charge of +²/₃ and the other a charge of −¹/₃ and are held to make up hadrons

Examples of quark in a Sentence

Recent Examples on the Web The basic commitment is that the fundamental constituents of reality—perhaps electrons and quarks—have incredibly simple forms of experience. Gareth Cook, Scientific American, "Does Consciousness Pervade the Universe?," 14 Jan. 2020 But when upgrades to the LHC are complete in the next year or so, scientists plan to use the Large Hadron Collider beauty (LHCb) experiment, which studies another particle known as the beauty quark, to see if the mysterious X17 turns up. Jonathan O'callaghan, Scientific American, "Evidence of New X17 Particle Reported, but Scientists Are Wary," 9 Dec. 2019 The puzzle is that the strong nuclear force arranges particles inside the neutron, known as quarks, so that their overall charge seemingly never grows lopsided. Quanta Magazine, "Top Dark Matter Candidate Loses Ground to Tiniest Competitor," 27 Nov. 2019 Thanks to the uncertainties inherent in quantum mechanics, its interior roils with countless gluons and quark-antiquark pairs that flit in and out of existence too quickly to be directly observed. Adrian Cho, Science | AAAS, "Department of Energy picks New York over Virginia for site of new particle collider," 9 Jan. 2020 This Higgs then quickly morphs into other particles, such as a pair of top quarks or W bosons, where the probability of each outcome depends on the strength of the Higgs’ coupling to each type of particle. Quanta Magazine, "The Physics Still Hiding in the Higgs Boson," 4 Mar. 2019 So then, are quarks and gluons the smallest things in the universe? Nandita Jayaraj, Quartz India, "Meet Indumathi, the Indian scientist who wants to capture one of the universe’s smallest particles," 27 Aug. 2019 Since quarks are involved in both cases, experts would have expected the weak-force symmetry-breaking to extend to the strong force as well. Quanta Magazine, "Top Dark Matter Candidate Loses Ground to Tiniest Competitor," 27 Nov. 2019 Studying the jet spray enables physicists to determine what kind of quark produced it. Jennifer Ouellette, Ars Technica, "MIT physicists: Social networks could hold the key to finding new particles," 31 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'quark.' 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 quark

1964, in the meaning defined above

History and Etymology for quark

coined by Murray Gell-Mann

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Time Traveler for quark

Time Traveler

The first known use of quark was in 1964

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Last Updated

30 Mar 2020

Cite this Entry

“Quark.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quark. Accessed 30 Mar. 2020.

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More Definitions for quark


How to pronounce quark (audio) How to pronounce quark (audio)

English Language Learners Definition of quark

physics : any one of several types of very small particles that make up matter

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More from Merriam-Webster on quark

Rhyming Dictionary: Words that rhyme with quark

Britannica English: Translation of quark for Arabic Speakers

Britannica.com: Encyclopedia article about quark

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