Representative aetiou or suit
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
A representative action or suit is one brought by a member of a class of persons on behalf of himself and the other members of the class. In the proceedings before judgment the plaintiff is, as a rule, dominus litis, (g. v.;) and may discontinue or compromise the action as he pleases.
Sweet.