mu

[ myoo, moo ]
/ myu, mu /

noun

the 12th letter of the Greek alphabet (M, μ).
the consonant sound represented by this letter.

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Origin of mu

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

Definition 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. 2020

Example sentences from the Web for mu

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)

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 (2 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 (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.