mu

noun

ˈmyü  ˈmü 

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

Word History

Etymology

Greek my

First Known Use

13th century, in the meaning defined above

Kids Definition

mu

noun

ˈmyü  ˈmü 

: the twelfth letter of the Greek alphabet

—Μ or μ

Medical Definition

mu

noun

ˈmyü  ˈmü 

plural mu

: micron