mu

noun
\ ˈmyü How to pronounce mu (audio) , ˈmü How to pronounce mu (audio) \

Definition of mu

: the 12th letter of the Greek alphabet — see Alphabet Table

First Known Use of mu

13th century, in the meaning defined above

History and Etymology for mu

Greek my

Learn More About mu

Time Traveler for mu

Time Traveler

The first known use of mu was in the 13th century

See more words from the same century

Dictionary Entries Near mu

Mtwara

mu

muazzin

See More Nearby Entries 

Statistics for mu

Cite this Entry

“Mu.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mu. Accessed 26 Jun. 2022.

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

More Definitions for mu

mu

noun
\ ˈmyü How to pronounce mu (audio) , ˈmü How to pronounce mu (audio) \
plural mu

Medical Definition of mu

: micron

WORD OF THE DAY

Test Your Vocabulary

Words Named After People

  • name tags
  • Namesake of the leotard, Jules Léotard had what profession?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

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!