noun
- A stable quark with an electric charge of +2/3 and a mass 607 times that of an electron. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). up quark. Retrieved September 21, 2026, from http://smartdefine.org/up_quark/definitions/1227579 |
| Chicago | WordNet. 2010. "up quark" http://smartdefine.org/up_quark/definitions/1227579 (accessed September 21, 2026). |
| Harvard | WordNet 2010, up quark, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/up_quark/definitions/1227579>. |
| MLA | WordNet. "up quark" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/up_quark/definitions/1227579> |