top quark

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top quark (plural top quarks)

1. (particle 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: up quark · down quark · charm quark · strange quark · top quark/truth quark · bottom quark/beauty quark ^[edit]