supergroup noun6 •Any group composed of other groups. •A group of musicians, each a star (especially, a superstar) of another band (especially in rock music).In 1974, David Geffen, Asylum's main man, applied his negotiating abilities to creating a country-rock supergroup along the lines of Crosby, Stills & Nash. — 1990 •The group to which a subgroup belongs.Formally, a supergroup is a more general notion than group. We illustrate the difference between the two notions by a simple example. — 2011 •In the L-carrier system, a multiplexed group of channel groups. •A sequence of groups of formations that compose a coherent unit. •A generalization of groups, used in the study of supersymmetry. formssupergroups