Definition from Wiktionary, the free dictionary
megaverse (plural megaverses)
- (physics) A theoretical higher-order universe that contains multiple (possibly an infinite number of) pocket universes within it;
2010, Nick Huggett, Everywhere and Everywhen: Adventures in Physics and Philosophy, ISBN 0195379519:
- An important part of Susskind's picture is that each of the pocket universes is expanding like a bubble, so you can't get out of one, but the whole megaverse also expands, so the bubbles don't collide.