supergravity

su·per·grav·ity  (spr-grv-t)

n.

The part of supersymmetry theory that attempts to merge the theory of gravity with the other fundamental forces by postulating the graviton's supersymmetric partner, the gravitino.

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supergravity  (spr-grv-t)

A quantum field theory that combines general relativity with supersymmetry in order to unify gravity with the other fundamental forces of nature. Supergravity predicts the existence of the graviton as a carrier for the force of gravity, as well as a corresponding particle called the gravitino, neither of which have been observed experimentally.