quark

noun
\ˈkwȯrk, ˈkwärk \

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 scientists found that a proton’s building block, known as a quark, faces a pressure of 100 decillion Pascal near the center of a proton. David Grossman, Popular Mechanics, "Pressures Inside a Proton Are More Extreme Than Inside a Neutron Star," 17 May 2018 In Germany, quark is thick and smooth like yogurt, but slightly drier. New York Times, "A Guide to Soft Fresh Cheeses: Cottage Cheese, Mascarpone and More," 26 June 2018 But researchers did not see the particles expected 60 percent of the time—bottom quarks. Jason Daley, Smithsonian, "Researchers Find More Evidence for the Higgs Boson," 10 July 2018 Protons and neutrons are familiar as tiny solids, but particle accelerators can melt them into what’s called a quark-gluon plasma, or QGP. Sylvia Morrow, Discover Magazine, "The Fastest Fluid," 1 Feb. 2018 In Russia and Poland, quark is sold as soft, pressed cakes of curds that are often broken up and mixed with other dairy products for blintzes, pierogi fillings or dips. New York Times, "A Guide to Soft Fresh Cheeses: Cottage Cheese, Mascarpone and More," 26 June 2018 In neutron stars such a phase transition could arise from neutrons breaking apart into a soup of their constituent particles, quarks. Joshua Sokol, Scientific American, "Gravitational Waves Reveal the Hearts of Neutron Stars," 5 June 2018 But there’s much more—protons and neutrons are made up of quarks held together by gluons, one of several types of boson. Jason Daley, Smithsonian, "The Large Hadron Collider Is Getting A Huge Power Boost," 19 June 2018 Tevatron researchers discovered the top quark, another subatomic particle, and helped lay the groundwork for CERN’s discovery of the Higgs boson. Peter Kujawinski, New York Times, "Colliders, Sundials and Wonder: When Science Is Your Destination," 28 May 2018

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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Dictionary Entries near quark

quare impedit

quarentene

quaresma

quark

quarl

quarled

Quarles

Statistics for quark

Last Updated

27 Oct 2018

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Time Traveler for quark

The first known use of quark was in 1964

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More Definitions for quark

quark

noun

English Language Learners Definition of quark

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

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Britannica English: Translation of quark for Arabic Speakers

Britannica.com: Encyclopedia article about quark

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