world Definition in the Cambridge English Dictionary
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Definition of “world” - English Dictionary

Definition of "world" - American English Dictionary

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worldnoun

 us   /wɜrld/

world noun (THE EARTH)

[U] the ​planet on which ​humanlife has ​developed, esp. ​including all ​people and ​theirways of ​life: People from all over the world will be ​attending the ​conference. The ​rapidgrowth of ​computers has ​changed the world. [U] The world can also ​mean the ​wholephysicaluniverse: The world ​contains many ​solarsystems, not just ours.

world noun (WHOLE AREA)

[C] all of a ​particulargroup or ​type of thing, such as ​countries or ​animals, or a ​wholearea of ​humanactivity or ​understanding: the ​animal/​plant world the ​business world the world of ​entertainment In the world of ​politics, the president’s ​voice is still the most ​powerful in the ​nation.

world noun (LARGE DEGREE)

[U] a ​largedegree; a lot: There’s a world of ​difference between the two ​hotels.
(Definition of world from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "world" - British English Dictionary

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worldnoun

uk   /wɜːld/  us   /wɝːld/

world noun (THE EARTH)

A1 [S] the ​earth and all the ​people, ​places, and things on it: Different ​parts of the world have very different ​climaticconditions. Which ​bridge has the ​longestspan in the world? News of the ​disastershocked the (​whole/​entire) world. We ​live in a changing world and ​people must ​learn to ​adapt. She's a world authority on ​foetaldevelopment. a world record/​championship
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world noun (GROUP/AREA)

B1 [C usually singular] a ​group of things such as ​countries or ​animals, or an ​area of ​humanactivity or ​understanding: the ​Muslim world the ​modern/​industrialized world the ​animal world stars from the ​rockmusic world Unexpected things can ​happen in the world ofsubatomicparticles.
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world noun (PLANET)

[C] a ​planet or other ​part of the ​universe, ​especially one where ​life might or does ​exist: There was a man on the ​news last ​night who ​believes we've been ​visited by ​beings from other worlds.
(Definition of world from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)

Definition of "world" - Business English Dictionary

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worldnoun [C, usually singular]

uk   us   /wɜːld/
a particular ​area of ​activity: Our world ofwork is ​changing rapidly. the world of ​advertising/the ​internet the business/​corporate world
(Definition of world from the Cambridge Business English Dictionary © Cambridge University Press)
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