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quark
[ kwawrk, kwahrk ]
noun
- Physics. any of the hypothetical particles with spin 1/2, baryon number 1/3, and electric charge 1/3 or −2/3 that, together with their antiparticles, are believed to constitute all the elementary particles classed as baryons and mesons; they are distinguished by their flavors, designated as up (u), down (d), strange (s), charm (c), bottom or beauty (b), and top or truth (t), and their colors, red, green, and blue. Compare color ( def 18 ), flavor ( def 5 ), quantum chromodynamics, quark model.
quark
1/ kwɑːk /
noun
- physics any of a set of six hypothetical elementary particles together with their antiparticles thought to be fundamental units of all baryons and mesons but unable to exist in isolation. The magnitude of their charge is either two thirds or one third of that of the electron
quark
2/ kwɑːk /
noun
- a type of low-fat soft cheese
quark
/ kwôrk,kwärk /
- Any of a group of elementary particles supposed to be the fundamental units that combine to make up the subatomic particles known as hadrons (baryons, such as neutrons and protons, and mesons). There are six different flavors (or types) of quark: up quark, down quark, top quark, bottom quark, charm quark, and strange quark. Quarks have fractional electric charges, such as 1 3 the charge of an electron.
- See Note at elementary particleSee Table at subatomic particle
Word History and Origins
Origin of quark1
Word History and Origins
Origin of quark1
Origin of quark2
Example Sentences
The names for these speculative particles often tack on an S to the names of known particles: selectrons contrast electrons, the squark is the inverted twin of the quark, and so on.
The results reveal that quarks and gluons, the fundamental building blocks that make up a proton's structure, are subject to so-called quantum entanglement.
Their approach attempts to illuminate a cosmological constant as well as the properties of leptons and quarks.
Immediately following the Big Bang, physicists estimate, based on QCD, that the universe was an immensely hot plasma of quarks and gluons that then quickly cooled and combined to produce protons and neutrons.
For example, many people prefer the creamy consistency of quark and yogurt.
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