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up quark

noun — 2 senses

up quark

noun
1

Natural sciences, Physical sciences, Physics Particle A quark having a fractional electric charge of +2/3 and a mass of about 1.5 to 4 MeV.

› A quark having a fractional electric charge…

2

Natural sciences, Physical sciences, Physics Particle Symbol: u

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.