# pocket universe

> English word · Noun

## Definitions
1. A hypothetical realm in inflationary theory, only one of which would contain our observable universe.
2. A small, self-contained fictional universe that borrows concepts from established universes.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/pocket-universe