pocket universe
A 'pocket universe' is a theoretical concept in physics and a popular trope in science fiction, representing a self-contained realm distinct from our observable universe.
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Definition
C2Cosmology
(technical, academic)A distinct region of space-time that has branched off from a larger multiverse, possessing its own physical laws and constants.
Example
- In cosmology, some theories propose that our universe is just one of many pocket universes within a multiverse.
B2Science Fiction
(informal)A self-contained, miniature universe that exists separately from our own.
Example
- The protagonist discovered a portal leading to a pocket universe where different rules of physics applied.
C1General
(metaphorical)A constricted environment where an individual lives, often implying confinement or isolation.
Example
- For years, the old man lived in a pocket universe of his own making, rarely interacting with the outside world.
Similar
Terms that have similar or relatively close meanings to "pocket universe":
alternate universepocket poolprison pocketpocket mousepocket watchpocket callnear spacepocket pistol