mu

M3U1
/mjuː//muː/

noun

The 12th letter of the Modern Greek alphabet.

Similar
CommonScrabble 4

Meanings

mu1

nounmu (countable and uncountable, plural mus)

plural mus

  1. countableuncountableThe 12th letter of the Modern Greek alphabet.

mu2

interjection
  1. Zen BuddhismNeither yes nor no.

    A monk once asked Master Joshu, 'Has a dog the Buddha Nature or not?' Joshu said, 'Mu!'

    2010, Joan Price, Sacred Scriptures of the World Religions, page 70
    4 more examples

    Mu means "no thing." Like "Quality" it points outside the process of dualistic discrimination. Mu simply says, "No class; not one, not zero, not yes, not no."[…]It's a great mistake, a kind of dishonesty, to sweep nature's mu answers under the carpet.

    1974, Robert M[aynard] Pirsig, Zen and the Art of Motorcycle Maintenance: An Inquiry into Values, New York, N.Y.: William Morrow & Company, →ISBN

    [p. 233] Achilles: Oh, but ‘MU’ is Jōshū’s answer. By saying ‘MU’, Jōshū let the other monk know that only by not asking such questions can one know the answer to them. Tortoise: Jōshū “unasked” the question. [p. 312] Achilles:[…]And the answer of “MU” here rejects the premises of the question, which are that one or the other must be chosen.

    1979, Douglas Hofstadter, Gödel, Escher, Bach: an Eternal Golden Braid, Basic Books, →ISBN, →OCLC

    "Mu," said Kelly Dahl. On one level mu means only yes, but on a deeper level of Zen it was often used by the master when the acolyte asked a stupid, unanswerable or wrongheaded question such as "Does a dog have the Buddha-nature?" The Master would answer only, "Mu," meaning—I say "yes" but mean "no," but the actual answer is: Unask the question.

    1996, Dan Simmons, “Looking for Kelly Dahl”, in The Year's Best Science Fiction, page 424

    The Fifth Patriarch's utterance You say mu [Buddha-nature] because Buddha-nature is emptiness articulates clearly and distinctly the truth that emptiness is not "no". In uttering Buddha-nature-emptiness one does not say "half a pound." One does not say "eight ounces." One says "mu."

    2002, Norman Waddell, Masao Abe, The Heart of Dōgen's Shōbōgenzō, page 72
nounmu (uncountable)
  1. uncountableZen BuddhismNothingness; nonexistence; the illusory nature of reality.

    If mu is mind, consciousness, it is nothing.

    2013, Maura O'Halloran, Pure Heart, Enlightened Mind, →ISBN
    3 more examples

    That being the case, we should naturally choose to contemplate mu from morning to night, forgetting everything.

    2012, Omori, Introduction To Zen Training, →ISBN, page 115

    Consequently, though mu is mindlike, the likeness to individual consciousness cannot be pushed very far.

    2012, Dr Robert Wilkinson, Nishida and Western Philosophy, →ISBN

    The monk posed to Chaoi-chou a question: Does a dog have a buddha nature or not?" Chao-chou, without a moment's hesitation, answered, “Mu." (Translated as "No.")

    2013, Sean Murphy, Natalie Goldberg, One Bird, One Stone: 108 Contemporary Zen Stories, →ISBN, page xvii

mu3

nounmu (plural mu)
  1. A unit of surface area, currently equivalent to two-thirtieths of a hectare.

    Of 114 village farming families, only ten had more than 30 mu of land and only five had more than 60 mu.

    2007, Chang Liu, Peasants and Revolution in Rural China: Rural Political Change in the North China Plain and the Yangzi Delta, 1850-1949, page 87
    3 more examples

    The Lucky Star Co-operative in Chuwo County on the plains of southern Shansi had, before the anti-Japanese war, 26 wells, 4 water-wheels and 166.1 mou of irrigated fields, 4.82 per cent of its total arable land.

    中国农业合作化的道路

    [1959 September, Tung Ta-lin [董大林], “The Inevitability of Quick Transition from Lower to Higher Stage of Agricultural Co-operation”, in Agricultural Co-operation in China [中国农业合作化的道路] (China Knowledge Series), 2nd edition, Peking: Foreign Languages Press, →OCLC, page 72

    Good news on the summer harvest prevailed in the countryside of Chienchiang County, Hupeh. The county reported remarkable increased in its 600,000 mou of summer food crops this year, surpassing the yield in 1962 which was considered as the best year.

    [1965 July 9 [1965 June 7], “Chienchiang County Reports Increase in Crops”, in Daily Report: Foreign Radio Broadcasts, number 131, Foreign Broadcast Information Service, sourced from Wuhan Domestic Service, →OCLC, page DDD 2

    Pengyang county was administered by Guyuan before 1988. In contrast to Guyuan, Pengyang is relatively wealthy. Farmers earn a considerable income through tobacco cultivation, which can yield an annual gross income of Rmb 1,500-2,000 per mu. In 1996, the cultivated area of tobacco in Pengyang was 11,000 mu.⁷

    2004, Peter Ho, “The Wasteland Auction Policy in Northwest China: Solving Environmental Degradation and Rural Poverty?”, in Rural Development in Transitional China: The New Agriculture, →ISBN, →ISSN, →LCCN, →OCLC, →OL, page 125

Mu4

proper noun
  1. A hypothetical or legendary continent that allegedly existed in the Atlantic or Pacific Ocean.

Mu5

nounMu (plural Mus)

plural Mus

  1. μ (a mu particle)

Mu6

proper noun
  1. Mu (a river in Burma).

MU7

proper noun
  1. abbreviationinitialismInitialism of North Maluku: a province of Indonesia.
  2. abbreviationbusinessAbbreviation of Micron Technology.

    Kishida told the executives, including those from Micron Technology Inc (MU), Intel Corp (INTC) and Taiwan Semiconductor Manufacturing Co (TSM) (TSMC), that stabilizing supply chains would be a topic of discussion at the G7 talks in the western city of Hiroshima.

    2023 May 18, Reuters, “Chipmakers look to Japan as worries about China grow”, in CNN Business
  3. abbreviationinitialismInitialism of University of Missouri

    Synonyms: Mizzou

nounMU (plural MUs)

plural MUs

  1. abbreviationinitialismInitialism of matchup.
  2. abbreviationinitialismrail transportInitialism of multiple unit.
  3. PhilippinesabbreviationinitialismslanguncountableInitialism of mutual understanding
  4. PhilippinesslangA person engaged in a situationship

Synonyms & antonyms

Origin

mu · noun

  1. Phoenician𐤌𐤌“water”
  2. Ancient Greekμῦ
  3. Englishmu

From Ancient Greek μῦ (mû), derived from Phoenician 𐤌𐤌 (mm /⁠mem⁠/, “water”). Doublet of mem.

Full word history & related roots →

mu · interjection, noun

  1. Japanese無“nothing, neither yes nor no”
  2. Englishmu

From Japanese 無 (mu, “nothing, neither yes nor no”).

Full word history & related roots →

mu · noun

From Mandarin 畝/亩 (mǔ).

Full word history & related roots →

Mu · proper noun

Coined by Charles Étienne Brasseur de Bourbourg in 1864 (through mistranslating a word in the Mayan Madrid Codex using the De Landa alphabet), as the name of a land that had been submerged by a catastrophe; later identified as Atlantis by Augustus Le Plongeon.

Full word history & related roots →

Mu · noun

  1. Greekμ
  2. Greekμ
  3. EnglishMu

Borrowed from Greek μ (m).

Full word history & related roots →

Mu · proper noun

  1. Burmeseမူး
  2. Burmeseမူး
  3. EnglishMu

Borrowed from Burmese မူး (mu:).

Full word history & related roots →

Translations

Ancient Greek μῦ
  • μῦ (mû)Greek letter
Arabic مُو
  • مُو (mū)Greek letter
Catalan mi
  • miGreek letter
Chinese Mandarin 繆 /缪, 姆
  • 繆 /缪 (miào)Greek letter
  • 姆 (mǔ)Greek letter
  • 米歐 /米欧 (mǐ'ōu)Greek letter
Czech mí
  • míGreek letter
Danish my
  • myGreek letter
Dutch mu
  • muGreek letter
Esperanto muo
  • muoGreek letter
Finnish myy, myy
  • myyGreek letter
  • myyan instance of that letter
French mu
  • muGreek letter
German My
  • MyGreek letter
Greek μι
  • μι (mi)Greek letter
Hungarian mű
  • műGreek letter
Japanese ミュー, ミ
  • ミュー (myū)Greek letter
  • ミ (mi)Greek letter
Korean 뮤
  • 뮤 (myu)Greek letter
Malay mu
  • muGreek letter
Persian مو
  • مو (mu)Greek letter
Polish mi, my
  • miGreek letter
  • myGreek letter
  • mian instance of that letter
  • myan instance of that letter
Portuguese mi
  • miGreek letter
Russian мю, ми
  • мю (mju)Greek letter
  • ми (mi)Greek letter
Swedish my
  • myGreek letter
Tagalog mu
  • muGreek letter
Thai มิว
  • มิว (miu)Greek letter

Rhymes & wordplay

Rhymes with mu

All rhymes →

Sounds the same

mew (first pronunciation only)moo (second pronunciation only)moo(first pronunciation) mew(second pronunciation) moomoo(first pronunciation) mew(second pronunciation) moo
Cite this entry
APA

mu. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/mu

MLA

“mu.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/mu. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “mu,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/mu.

Source: mu on Wiktionary, CC BY-SA 4.0.