English Noun up quark #particles A quark having a fractional electric charge of +2/3 and a mass of about 1.5 to 4 MeV?. Symbol: u
Translations Finnish: ylös-kvarkki Japanese: アップクォーク Swedish: uppkvark c
See also down quark charm quark strange quark top quark / truth quark bottom quark / beauty quark anti-up quark
sv:up quark
