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World War III

American  

noun

  1. a hypothetical world war of the future, often conceived as a nuclear war resulting in the total destruction of the human race.


Usage

What is World War III? World War III or World War Three (WW3) is a hypothetical, catastrophic global conflict.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

These pages are full of people with anxieties and worries — from worrying about World War III to a retiree with $1 million who is riddled with financial security.

From MarketWatch • Oct. 10, 2025

World War III hasn’t started yet, but it’s time to wake up and watch out.

From Salon • Apr. 16, 2024

“We debated health care and taxes, which is reasonable,” he said, adding, “Civil war? No. World War III? No, no, no.”

From New York Times • Jan. 13, 2024

But he doesn’t want World War III — especially with nuclear weapons.

From Seattle Times • Jul. 12, 2023

One issue outlined horrific prophecies, graphically illustrated, of what Armstrong predicted would be World War III, when the United States and Great Britain would be destroyed by a United States of Europe.

From "Endgame" by Frank Brady