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MU may refer to:

Arts and entertainment[edit]

Film and television[edit]



  • Mu chord or mu major, a term coined by jazz-rock group Steely Dan to refer to various voicings of an add-9 chord
  • Mu Performing Arts, an Asian-American theater company and taiko drumming ensemble
  • MU (musician), real name Mutsumi Kanamori
  • MU, a psychedelic group led by Merrell Fankhauser and Jeff Cotton
  • /mu/, the music board on 4chan

Other media[edit]

Businesses and organizations[edit]

Businesses and brands[edit]

  • Mu Dynamics, a company which makes hardware and software to test network services
  • MU Press, an independent comic book publisher
  • μTorrent, a freeware BitTorrent client for Microsoft Windows and Mac OS X
  • Isuzu MU Wizard, a compact sport/utility vehicle
  • Megaupload, a one-click filehosting service
  • Micron Technology, Boise, Idaho, US, known for producing semiconductor devices
  • China Eastern Airlines (IATA code: MU), an airline headquartered in Shanghai, China

Other organizations[edit]


  • Mu (letter), Μ or μ, a letter in the Greek alphabet
  • Mu (kana), む or ム, a Japanese kana
  • Groupe µ, an interdisciplinary Belgian group focusing on linguistics and rhetoric


  • Mu River, a river in Burma (Myanmar)
  • Mu River (Hokkaidō), a river in Japan
  • Mù, a village in the Edolo municipality of Italy
  • Mauritius (ISO 3166-1 alpha-2 country code MU)
    • .mu, the country code top-level domain for Mauritius

Mythical places[edit]

  • Mu (lost continent), a mythical continent in the Pacific Ocean
  • Mù, a purported entrance near Edolo, Italy to the underground legendary city Agartha



United States[edit]

Other countries[edit]


Religion and philosophy[edit]

Science, technology, and mathematics[edit]

Biology and medicine[edit]

  • Mu phage, a bacteriophage of the Myoviridae family of double-stranded DNA non-enveloped contractile tail bacterial viruses
  • Meaningful Use, Electronic Health Record regulations in the United States linked to achieving measurable outcomes in patient engagement, care coordination, and population health
  • Centimorgan, or "map unit", a unit of recombinant frequency in genetics
  • Monitor unit, the machine output of a linear accelerator in radiation therapy
  • Population growth rate, a calculation of doubling time of an organism or population


  • Chemical potential, a form of potential energy that can be absorbed or released during a chemical reaction
  • Bridging ligand, an atom that connects two or more metal centers in a complex (molecule)


  • μ, in evolutionary algorithms, the population size from which in each generation λ offspring will generate
  • Mu, in the Perl 6 programming language, the root of the language's type hierarchy
  • .mu, the country code top-level domain for Mauritius
  • μTorrent, a freeware BitTorrent client for Microsoft Windows and Mac OS X
  • Megaupload, a one-click filehosting service




Other uses in science and technology[edit]

  • Mu (rocket family), a Japanese rocket family launched between 1966 and 2006
  • Multiple unit, self-propelled train carriages capable of coupling with other units of similar type

Other uses[edit]

See also[edit]