the world > matter > physics > atomic physics > particle physics > quark > [noun] > differentiating property > top or truth (4)
Particle Physics. One of the flavours (flavour, n. 5) that characterize quarks and leptons, more often termed top (top, n.1 38); a quark with…
Particle Physics. The name of (a quark carrying) a possible sixth flavour, with a charge of +⅔. Frequently attributive.
top or truth, a quark flavour.