Dictionary.com

mu

[ myoo, moo ]
/ myu, mu /
Save This Word!

noun
the 12th letter of the Greek alphabet (M, μ).
the consonant sound represented by this letter.
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of mu

First recorded in 1895–1900, mu is from the Greek word

Other definitions for mu (2 of 2)

Mu
[ myoo, moo ]
/ myu, mu /

noun
a legendary lost continent supposed to have sunk into the SW Pacific Ocean at about the same time that Atlantis disappeared into the Atlantic Ocean.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use mu in a sentence

British Dictionary definitions for mu (1 of 3)

mu1
/ (mjuː) /

noun
the 12th letter in the Greek alphabet (Μ, μ), a consonant, transliterated as m

British Dictionary definitions for mu (2 of 3)

mu2

the internet domain name for
Mauritius

British Dictionary definitions for mu (3 of 3)

MU

abbreviation for
Musicians' Union
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for mu (1 of 3)

μ

The Greek letter mu. Entries beginning with this character are alphabetized under mu.
The symbol formicro-
The symbol fordynamic viscosity

Medical definitions for mu (2 of 3)

mu
[ myōō, mōō ]

n.
The 12th letter of the Greek alphabet.
adj.
Of, relating to, or being a polypeptide chain that is one of five types of heavy chains present in immunoglobins.

Medical definitions for mu (3 of 3)

Mu

abbr.
Mache unit
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
FEEDBACK