universe


universe
/yooh"neuh verrs'/, n.
1. the totality of known or supposed objects and phenomena throughout space; the cosmos; macrocosm.
2. the whole world, esp. 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. Also called universe of discourse. Logic. the aggregate of all the objects, attributes, and relations assumed or implied in a given discussion.
5. Also called universal set. Math. the set of all elements under discussion for a given problem.
6. Statistics. the entire population under study.
[1325-75; ME < OF univers < L universum, n. use of neut. of universus entire, all, lit., turned into one, equiv. to uni- UNI- + versus (ptp. of vertere to turn)]

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Whole cosmic system of matter and energy of which Earth is a part.

Its main constituents are the galaxies, within which are stars and stellar groupings and nebulae (see nebula). Earth's Sun is one star among the billions of stars in the Milky Way Galaxy. All atoms, subatomic particles, and everything they compose are also part of the universe. The universe is governed by four fundamental forces: the strong force, the weak force, the electromagnetic force, and gravitation. Numerous theories have been proposed for the origin and structure of the universe. See also big bang; cosmology; expanding universe; steady-state theory.

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      the whole cosmic system of matter and energy of which the Earth is a part. See Cosmos.

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Universalium. 2010.

Synonyms:

Look at other dictionaries:

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  • universe — 1580s, the whole world, cosmos, from O.Fr. univers (12c.), from L. universum the universe, noun use of neut. of adj. universus all together, lit. turned into one, from unus one (see ONE (Cf. one)) + versus, pp. of vertere to turn (see …   Etymology dictionary

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  • universe — [yo͞o′nə vʉrs΄] n. [L universum, the universe < neut. of universus, all together < unus,ONE + versus, pp. of vertere, to turn: see VERSE] 1. the totality of all the things that exist; creation; the cosmos 2. the world, or earth, as the… …   English World dictionary

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  • universe — ► NOUN 1) all existing matter and space considered as a whole; the cosmos. 2) a particular sphere of activity or experience. ORIGIN from Latin universus combined into one, whole …   English terms dictionary


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