UP QUARK

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

A stable quark with an electric charge of +2/3 and a mass 607 times that of an electron

Classified under:

Nouns denoting natural objects (not man-made)

Hypernyms ("up quark" is a kind of...):

quark ((physics) hypothetical truly fundamental particle in mesons and baryons; there are supposed to be six flavors of quarks (and their antiquarks), which come in pairs; each has an electric charge of +2/3 or -1/3)

Credits