SU3symmetry

SU3symmetry

[¦es ¦yü ‚səb¦thrē ′sim·ə·trē]
(particle physics)
A unitary symmetry based on a fundamental multiplet of three equivalent particles—in particular, the approximate symmetry based on the up, down, and strange quarks, and the exact symmetry based on the three differently colored quarks of a given flavor.