down quark downpouring • downright · · · Info · Definitions · Characters · · down quark · · Text Common · · Latin · · Scripts 10 · · Length 3 · · Syllables Definitions · · · (noun) a stable quark with an electric charge of -1/3 and a mass 607 times that of an electron. Synonyms: down quark. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 k latin small letter k U+006B n latin small letter n U+006E o latin small letter o U+006F q latin small letter q U+0071 r latin small letter r U+0072 u latin small letter u U+0075 w latin small letter w U+0077