(physics) the characteristic of quarks that determines their role in the strong interaction WordNet 3.0 & Open English WordNet

Color charge is a property of quarks and gluons that is related to the particles' strong interactions in the theory of quantum chromodynamics. Wikipedia

A property of quarks and gluons, related to their strong interactions Wikipedia Disambiguation

Property of quarks and gluons that is related to the particles' strong interactions in the theory of quantum chromodynamics Wikidata

A property of quarks, with three values called red, green, and blue, which they can exchange by passing gluons. Wiktionary

In the Standard Model of particle physics, a property possessed by quarks, anti-quarks, and gluons that determine rules for how these particles may interact. There are three pairs of colors and anti-colors: red, green, blue, and their corresponding anti-colors (e.g. anti-red). Wiktionary