Meanings
mu1
plural mus
- countableuncountableThe 12th letter of the Modern Greek alphabet.
mu2
- 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 704 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 424The 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
- uncountableZen BuddhismNothingness; nonexistence; the illusory nature of reality.
If mu is mind, consciousness, it is nothing.
2013, Maura O'Halloran, Pure Heart, Enlightened Mind, →ISBN3 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 115Consequently, though mu is mindlike, the likeness to individual consciousness cannot be pushed very far.
2012, Dr Robert Wilkinson, Nishida and Western Philosophy, →ISBNThe 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
- 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 873 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 72Good 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 2Pengyang 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
Mu5
Mu6
MU7
- abbreviationinitialismInitialism of North Maluku: a province of Indonesia.
- 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
plural MUs
- abbreviationinitialismInitialism of matchup.
- abbreviationinitialismrail transportInitialism of multiple unit.
- PhilippinesabbreviationinitialismslanguncountableInitialism of mutual understanding
- PhilippinesslangA person engaged in a situationship
Synonyms & antonyms
Origin
mu · noun
- Phoenician𐤌𐤌“water”
- Ancient Greekμῦ
- Englishmu
From Ancient Greek μῦ (mû), derived from Phoenician 𐤌𐤌 (mm /mem/, “water”). Doublet of mem.
More words from Ancient Greek, Phoenician
Full word history & related roots →mu · interjection, noun
- Japanese無“nothing, neither yes nor no”
- Englishmu
From Japanese 無 (mu, “nothing, neither yes nor no”).
More words from Japanese
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
- Greekμ
- Greekμ
- EnglishMu
Borrowed from Greek μ (m).
More words from Greek
Full word history & related roots →Mu · proper noun
- Burmeseမူး
- Burmeseမူး
- EnglishMu
Borrowed from Burmese မူး (mu:).
More words from Burmese
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
Cite this entry
mu. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/mu
“mu.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/mu. Accessed November 2, 2026.
WatkinsX Dictionary, s.v. “mu,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/mu.
Source: mu on Wiktionary, CC BY-SA 4.0.