universe

American  

[yoo-nuh-vurs] / ˈyu nəˌvɜrs /

noun

1. the universe. the totality of known or supposed objects and phenomena throughout space; the cosmos; macrocosm.

2. the whole world, especially with reference to humanity.

   a truth known throughout the universe.

3. a world or sphere in which something exists or prevails.

   his private universe.

4. in New Age philosophy and popular culture, a divine but nonpersonal being, consciousness, or field of energy believed to connect everything that is, allowing the interaction of the physical with the spiritual and thought with reality.

5. Also called universe of discourse.  Logic. the aggregate of all the objects, attributes, and relations assumed or implied in a given discussion.

6. Also called universal set.  Mathematics. the set of all elements under discussion for a given problem.

7. Statistics. the entire population under study.

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universe British  

/ ˈjuːnɪˌvɜːs /

noun

1. astronomy the aggregate of all existing matter, energy, and space

2. human beings collectively

3. a province or sphere of thought or activity

4. statistics another word for population

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universe Scientific  

/ yo̅o̅′nə-vûrs′ /

1. The totality of matter, energy, and space, including the Solar System, the galaxies, and the contents of the space between the galaxies. Current theories of cosmology suggest that the universe is constantly expanding.

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Other Word Forms

• subuniverse
  noun
• superuniverse
  noun

Etymology

Origin of universe

First recorded in 1325–75; Middle English, from Old French univers, from Latin ūniversum, noun use of neuter of ūniversus “all, entire,” literally, “turned into one,” from ūni- uni- + versus “turned” (past participle of vertere “to turn”)

Explanation

Universe is a big word — in fact, it includes all matter and all of space. We can't see or know much about the outer limits of the universe, but we know that it has them, and the idea of matter contained within boundaries gives us other meanings for the word. You might refer to a "universe of ideas," or when conducting a scientific study, create "a universe of data." Universe can also mean a defined set of something — the five blocks between the playground and home can be the whole universe for a small child.

Example Sentences

Discovery will encompass CNN, CBS, HBO, and Nickelodeon, as well as some of Hollywood's most valuable franchises, including "Harry Potter," "Game of Thrones," the DC Universe, "Mission: Impossible," and "SpongeBob SquarePants."

From Barron's • May 13, 2026

Scientists studying gravitational waves believe they may have uncovered how the Universe creates its biggest black holes.

From Science Daily • May 8, 2026

He also wrote a 2005 memoir entitled “Mastering the Universe: He-Man and the Rise and Fall of a Billion-Dollar Idea,” where he accuses Mattel of attempting to take credit for his ideas.

From Los Angeles Times • Apr. 30, 2026

Its success spawned the creation of the Masters of the Universe franchise, which includes the villain Skeletor, the fighting tiger Battle Cat and He-Man’s sister, She-Ra, another one of Sweet’s designs.

From Los Angeles Times • Apr. 30, 2026

He said that there were only black cat-shaped holes in the Universe.

From "The God of Small Things" by Arundhati Roy