supergroup

From super- +‎ group.

supergroup (plural supergroups)

1. Any group composed of other groups.
   1. (mathematics) The group to which a subgroup belongs.
      • 2011, Alexander Kulikov, Nikolay Vereshchagin, editors, Computer Science – Theory and Applications […] , Springer, →ISBN, page 237:

        Formally, a supergroup is a more general notion than group. We illustrate the difference between the two notions by a simple example.

   2. (music) A group of musicians, each a star of another band (especially in rock music).
      • 1990, Wayne Jancik, The Billboard Book of One-Hit Wonders, →ISBN, page 365:

        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.

      • [2017, Norman Abjorensen, Historical Dictionary of Popular Music, Rowman & Littlefield, →ISBN, page 487:

        A supergroup is a rock and pop music term for a group whose members are already successful and well known, either as solo performers or part of other groups. It was first applied in 1968, to Cream, whose three members had already achieved prominence, […]]

   3. (physics) A generalization of groups, used in the study of supersymmetry.
   4. (telecommunications) In the L-carrier system, a multiplexed group of channel groups.
   5. (geology) A sequence of groups of formations that compose a coherent unit.