world noun Definition in the Cambridge Learner’s Dictionary
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Definition of “world” - Learner’s Dictionary

world

noun
 
 
/wɜːld/
the world A1 the Earth and all the people, places, and things on it: Everest is the highest mountain in the world. She's travelled all over the world.Something, anything, nothing, and everythingThe Earth and outer space - general words
B1 [C] the people and things that are involved in a particular activity or subject: [usually singular] the entertainment world the world of politicsTopics and areas of interestGroups of people
the developing/industrialized/Western, etc world a particular area of the EarthContinents and regions of the worldCountry namesCountry and nation
the plant/animal, etc world plants/animals, etc as a groupGroups and collections of thingsVariety and mixtures
your world A2 your life and experiences: His whole world fell apart when she left.Lifestyles and their studyExisting and being
→  See also have the best of both worlds , not be the end of the world , the Old World , the outside world , the Third World , be on top of the world , do sb a/the world of good , be out of this world , think the world of sb , the whole world
(Definition of world noun from the Cambridge Learners Dictionary © Cambridge University Press)
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