quark

noun
\ 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 Since many different kinds of visible particles exist — quarks, electrons and so on — there might be multiple dark particles as well. Quanta Magazine, "What Might Be Speeding Up the Universe’s Expansion?," 27 Apr. 2020 The electron, quark, and muon, for example, are paired with the positron, antiquark, and antimuon, respectively. Sophia Chen, Wired, "Physicists Take Their Closest Look Yet at an Antimatter Atom," 19 Feb. 2020 Since the early 1970s, physicists have known that each proton consists of a trio of less massive particles called quarks. Adrian Cho, Science | AAAS, "Department of Energy picks New York over Virginia for site of new particle collider," 9 Jan. 2020 These particles are much, much lighter than quarks and pass through the cosmos ethereally, rarely stopping to interact with anything at all. Clara Moskowitz, Scientific American, "Antimatter Discovery Reveals Clues about the Universe’s Beginning," 23 Apr. 2020 The angle — θ, or theta — could have ranged anywhere from zero to 360 degrees, representing degrees of difference between quarks and mirror-image antiquarks. Quanta Magazine, "Axions Would Solve Another Major Problem in Physics," 17 Mar. 2020 The kaon, a special case of meson particle, is made of one quark and one antiquark. Caroline Delbert, Popular Mechanics, "Something Weird Just Happened That We Can't Really Explain With Existing Physics," 6 Mar. 2020 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

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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Statistics for quark

Last Updated

25 May 2020

Cite this Entry

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

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More Definitions for quark

quark

noun
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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