up quark

1. 1.

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

   Broaderquark

Questions about up quark

What does up quark mean?

up quark means "a stable quark with an electric charge of +2/3 and a mass 607 times that of an electron".

Is up quark a common word?

up quark is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.