1. (noun)
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 Synonyms: quark cheese
2. (noun)
quark cheese, quark
- fresh unripened cheese of a smooth texture made from pasteurized milk, a starter, and rennet Synonyms: quark, quark cheese