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

As far back as the late 1960s, physicists had tried to explain the existence of fundamental particles — electrons, photons, quarks — in terms of minuscule vibrating strings. Quanta Magazine, "Mathematicians Explore Mirror Link Between Two Geometric Worlds," 9 Apr. 2018 In ordinary matter, quarks come in two types, up and down. Adrian Cho, Science | AAAS, "Exotic particles called pentaquarks may be less weird than previously thought," 5 June 2019 Even more exciting, the bright gamma-ray glow fit quite well to dark matter being annihilated into a pair of matter/antimatter quarks. Chris Lee, Ars Technica, "Gamma ray evidence for dark matter outshone by a flock of pulsars," 10 Aug. 2018 Hadley is also making ghee — a special request from members of a nearby climbing gym following a Keto diet — ricotta cheese and quark in-house. Tara Duggan, SFChronicle.com, "Daily Driver opens, bringing house-made bagels, butter to San Francisco’s Dogpatch," 13 June 2019 Pentaquarks are heavier cousins of protons and neutrons, which are also made of quarks. Adrian Cho, Science | AAAS, "Exotic particles called pentaquarks may be less weird than previously thought," 5 June 2019 Quark-gluon plasma: A state in which protons and neutrons dissolve into their constituent quarks, which can move freely among particles called gluons that carry the strong force. Adam Mann, National Geographic, "Confirmed: New phase of matter is solid and liquid at the same time," 8 Apr. 2019 The Jeep reacts and time momentarily slows down, the oversteering Highlander doing a Ken Block gymkhana slo-mo as its rear bumper comes within a quark or two of slapping the Wrangler into the snowbank. Ezra Dyer, Popular Mechanics, "Why the New Jeep Wrangler's Turbocharged Four-Cylinder Engine Is Totally Worth the Extra Money," 13 Feb. 2019 The building blocks of atoms, protons and neutrons, are composed of a collection of particles called quarks and gluons. John Timmer, Ars Technica, "Atoms may come apart as the Universe’s biggest stars explode," 24 Oct. 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.

See More

First Known Use of quark

1964, in the meaning defined above

History and Etymology for quark

coined by Murray Gell-Mann

Keep scrolling for more

Learn More about quark

Dictionary Entries near quark

quare impedit

quarentene

quaresma

quark

quarl

quarled

Quarles

Statistics for quark

Last Updated

18 Aug 2019

Look-up Popularity

Time Traveler for quark

The first known use of quark was in 1964

See more words from the same year

Keep scrolling for more

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

Keep scrolling for more

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

Comments on quark

What made you want to look up quark? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

not constant or steady

Get Word of the Day daily email!

Test Your Vocabulary

Summer 2019 Words of the Day Quiz

  • a-bowl-of-peach-sorbet-with-cut-peaches-next-to-it
  • Which is a synonym of desideratum?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!