ultima ratio

noun
ul·​ti·​ma ra·​tio | \ ˌu̇l-tə-mə-ˈrä-tē-ˌō How to pronounce ultima ratio (audio) \

Definition of ultima ratio

: the final argument also : the last resort (such as force)

First Known Use of ultima ratio

1780, in the meaning defined above

History and Etymology for ultima ratio

New Latin

Learn More About ultima ratio

Time Traveler for ultima ratio

Time Traveler

The first known use of ultima ratio was in 1780

See more words from the same year

Dictionary Entries Near ultima ratio

ultimacy

ultima ratio

ultima ratio regum

See More Nearby Entries 

Statistics for ultima ratio

Cite this Entry

“Ultima ratio.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultima%20ratio. Accessed 28 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Which Word Does Not Belong?

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

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!