Meaning of the word "world war" in English

What does "world war" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

world war

US /wɜrld wɔr/
UK /wɜːld wɔː/
"world war" picture

Noun

a war involving many large nations in all different parts of the world

Example:
Many historians study the causes of the first World War.
The threat of a third world war is a common topic in international politics.