truth quark

/truθ kwɑrk/
IPA guide

Definitions of truth quark
  1. noun
    a hypothetical quark with a charge of +2/3 and a mass more than 100,000 times that of an electron
    synonyms: top quark
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    type of:
    quark
    (physics) truly fundamental particle in mesons and baryons; there are supposed to be six flavors of quarks (and their antiquarks), which come in pairs; each has an electric charge of +2/3 or -1/3
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