bottom quark

/ˌbɑdəm kwɑrk/
IPA guide

Definitions of bottom quark
  1. noun
    a quark with a charge of -1/3 and a mass about 10,000 times that of an electron
    synonyms: beauty 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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