Wiktionary
a. Of or pertaining to a supergalaxy.
Usage examples of "supergalactic".
It carried them to exotic distant worlds, introduced them to strange alien beings, wowed them with vast supergalactic inteligences, star-spanning empires, time travel -- Big Ideas, in other words, that stretched the boundaries of the imagination, leaving the lucky reader breathless and starry-eyed.
CMB, we should be able to factor in models of even galactic and supergalactic motions, as well.
Universal Mind would create joys for which we as yet have neither word nor concept, and would draw into harmony all those lesser beings, Earthminds, Starminds, Galactic and Supergalactic, who may freely assent to participate.
Jordan with the three-sixty, triple pump, over-the-shoulder, in-your-face, supergalactic mind-fucker!
Within ten million light-years off the supergalactic plane of the local supercluster were many groups of galaxies.