multiverse

noun

The concept of a multiverse is fascinating.

意味（1）

(philosophy) The world, considered as lacking in purpose, design, or predictability.

意味（2）

(physics, cosmology) The hypothetical group of all the possible universes in existence.

Our universe is a very small part of the multiverse.

意味（3）

(fiction) The different canons, continuities or timelines of a fictional property, considered as a whole.

In the DC multiverse, our reality is called "Earth-33". But in the Marvel multiverse, it's "Earth-1218".