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Definition of Up quark
1. Noun. A stable quark with an electric charge of +2/3 and a mass 607 times that of an electron.
Generic synonyms: Quark
Definition of Up quark
1. Noun. A quark having a fractional electric charge of +2/3 and a mass of about 1.5 to 4 MeV. Symbol: u ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Up Quark
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