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world war

noun

Simple Definition of world war

  • : a war involving many nations of the world

Source: Merriam-Webster's Learner's Dictionary

Full Definition of world war

  1. :  a war engaged in by all or most of the principal nations of the world; especially capitalized both Ws :  either of two such wars of the first half of the 20th century

Examples of world war in a sentence

  1. He fought in both World Wars.

  2. The nations were prepared for world war.



1909

First Known Use of world war

1909


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