top quark

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top quark

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top quark (plural top quarks)

1. (physics) A quark having a fractional electric charge of ${\displaystyle +{\frac {2}{3}}}$ and a mass of about 178,000 MeV.
   Symbol: ${\displaystyle t}$

   Synonym: (dated) truth quark

• (quarks) quark; up quark, down quark, charm quark, strange quark, top quark/truth quark, bottom quark/beauty quark ^{(Category: en:Quarks)}