An Etymological Dictionary of Astronomy and Astrophysics

Any physical theory that unites the strong, electromagnetic, and weak interactions at high energy. It is hoped that GUTs can ultimately be extended to incorporate gravity. → theory of everything.

Etymology (EN): M.E. graunt, from O.Fr. grant, grand, from L. grandis “big, great,” also “full-grown;” unified, p.p. of → unify; → theory.

Etymology (PE): Negâré, → theory; yegâneš, verbal noun of yegânestan, → unify; bozorg→ great.