top quark top-quality • toprail · · · Info · Definitions · Synonyms · Characters · · top quark · · Text Common · · Latin · · Scripts 9 · · Length 3 · · Syllables Definitions · · · (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, truth quark. · · Noun Definition 1 Synonyms · · · truth quark · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 k latin small letter k U+006B o latin small letter o U+006F p latin small letter p U+0070 q latin small letter q U+0071 r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075