supergalaxy noun2 •A very large, extended cluster of galaxies.Our galaxy, together with the ninety-three globular clusters and the two Magellanic Clouds, forms a sort of super-galaxy in space. — 1935 •A single, isolated galaxy as a result of a wholesale merger of a galaxy cluster or group.Our descendants will observe that they live in a blob of stars, which results from gravity pulling together a few nearby galaxies into one supergalaxy. — 2013 formssupergalaxies
