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

“As though a whole universe is being described in invisible ink.”

From Salon • May 31, 2026

Though the two aren’t in the same universe professionally, they jam together with some first-rate instruments Danny just happens to have lying around.

From The Wall Street Journal • May 28, 2026

One concern is that the small-cap universe has become less profitable over time, Sagal said.

From MarketWatch • May 28, 2026

It’s nice if we have people from that universe pop in, but it’s not required.

From Los Angeles Times • May 28, 2026

Everything had a grand purpose, and there was nothing amiss in the universe; it was our job to adjust to whatever came our way.

From Each Little Bird That Sings by Deborah Wiles