World War I

noun

Definition of World War I

: the war that was fought mainly in Europe from 1914 to 1918

Learn More about World War I

Statistics for World War I

Cite this Entry

“World War I.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/World%20War%20I. Accessed 24 Sep. 2020.

More from Merriam-Webster on World War I

Britannica English: Translation of World War I for Arabic Speakers

Comments on World War I

What made you want to look up World War I? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Homophone Quiz

  • three bears two of them look like theyre whispering to a third bear who looks chuffed to be the center of attention
  • In order to judge how people felt, the senator's office hired a firm to take a ______.
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!