tau

See also: Tau, tàu, Tàu, tãu, tău, taʻu, ta'u, and täü

English

Ancient Greek Alphabet
←
sigma
 →
upsilon
Τ τ
Ancient Greek: ταῦ
Wikipedia article on tau

Etymology

Borrowed from Ancient Greek ταῦ (taû).

Pronunciation

  • IPA(key): /taʊ/, /tɔː/
  • Audio (US)(file)

Noun

tau (plural taus)

  1. The letter Τ/τ in the Greek, Hebrew and ancient Semitic alphabets, being the nineteenth letter of the Classical and Modern Greek, the twenty-first letter of Old and Ancient Greek.
  2. A Τ-shaped sign or structure; a St. Anthony's cross, sometimes considered as a sacred symbol.
    • 1658: Nor shall we take in the mysticall Tau, or the Crosse of our blessed Saviour, which having in some descriptions an Empedon or crossing foot-stay, made not one single transversion. — Sir Thomas Browne, The Garden of Cyrus (Folio Society 2007, p. 168)
  3. (physics, dated) A tau meson, now usually known as a kaon.
  4. (physics) An unstable heavy lepton, which decays into a muon or electron; a tauon.
  5. (biology) Tau protein, a type of protein that stabilizes microtubules in the human central nervous system, failures of which are associated with forms of dementia.
    • 1999, Matt Ridley, Genome, Harper Perennial 2004, p. 263:
      Quite what that job is remains obscure, but one theory is that it is to stabilise another protein called tau, which is supposed in turn to keep in shape the tubular ‘skeleton’ of a neuron.
  6. (finance) A measurement of the sensitivity of the value of an option to changes in the implied volatility of the price of the underlying asset.
  7. (mathematics, neologism) An irrational and transcendental constant representing the ratio of the circumference of a Euclidean circle to its radius, approximately 6.2831853071; equal to twice the value of pi. Often written τ.

Synonyms

  • (measure of derivative price sensitivity): kappa, vega

Hypernyms

  • (measure of derivative price sensitivity): Greeks (includes list of coordinate terms)

Coordinate terms

Derived terms

Translations

Further reading

Anagrams

Catalan

Pronunciation

Noun

tau f (plural taus)

  1. Tau; the Greek letter Τ (lowercase τ).
  2. Tav; the Hebrew letter ת‎.
  3. (religion) A tau cross.

Czech

Pronunciation

  • IPA(key): [ˈtau̯]

Noun

tau n

  1. tau (Greek letter)

Further reading

  • tau in Kartotéka Novočeského lexikálního archivu
  • tau in Akademický slovník cizích slov, 1995, at prirucka.ujc.cas.cz

Finnish

Etymology

Borrowed from Ancient Greek ταῦ (taû).

Greek letter
Ττ Previous: sigma
Next: ypsilon

Pronunciation

  • IPA(key): /ˈtɑu̯/
  • Hyphenation: tau

Noun

tau

  1. tau

Declension

Declension of tau (type rosé)
singular plural
nominative tau taut
genitive taun –
partitive tauta –
accusative tau
taun		 taut
inessive taussa –
elative tausta –
illative tauhun –
adessive taulla –
ablative taulta –
allative taulle –
essive tauna –
translative – –
instructive tauksi –
abessive tautta –
comitative – –

In plural, only nominative case is used[1].

References

Anagrams

French

Pronunciation

  • IPA(key): /to/
  • Audio (Paris)(file)

Noun

tau m (plural tau)

  1. tau (Greek letter)
  2. (physics) tau, tauon

Derived terms

Further reading

Anagrams

German Low German

Alternative forms

  • to (in some dialects)

Etymology

Middle Low German tô.

Preposition

tau

  1. (in some dialects) to

Derived terms

Hungarian

Etymology

From Ancient Greek ταῦ (taû).

Pronunciation

  • IPA(key): [ˈtɒu]
  • Hyphenation: tau

Noun

tau (plural tauk)

  1. tau (Greek letter)

Declension

Inflection (stem in long/high vowel, back harmony)
singular plural
nominative tau tauk
accusative taut taukat
dative taunak tauknak
instrumental tauval taukkal
causal-final tauért taukért
translative tauvá taukká
terminative tauig taukig
essive-formal tauként taukként
essive-modal — —
inessive tauban taukban
superessive taun taukon
adessive taunál tauknál
illative tauba taukba
sublative taura taukra
allative tauhoz taukhoz
elative tauból taukból
delative tauról taukról
ablative tautól tauktól
Possessive forms of tau
possessor single possession multiple possessions
1st person sing. taum tauim
2nd person sing. taud tauid
3rd person sing. tauja taui
1st person plural taunk tauink
2nd person plural tautok tauitok
3rd person plural taujuk tauik

Icelandic

Etymology

Borrowed from Danish tøj.

Pronunciation

  • IPA(key): /tʰøyː/
  • Rhymes: -øyː

Noun

tau n (genitive singular taus, no plural)

  1. fabric
  2. clothing

Declension

Italian

Noun

tau m, f (invariable)

  1. tau (Greek letter)

Anagrams

Japanese

Romanization

tau

  1. Rōmaji transcription of たう

Kapampangan

Etymology

Ultimately from Proto-Austronesian *Cau

Noun

tau

  1. person
  2. human

Lithuanian

Pronoun

tau

  1. (second-person singular) dative form of tu.

Malay

Alternative forms

Etymology

From Proto-Malayic *tahu(ʔ), from Proto-Malayo-Chamic, from Proto-Malayo-Sumbawan, from Proto-Sunda-Sulawesi, from Proto-Malayo-Polynesian *taqu, from Proto-Austronesian *Caqu.

Pronunciation

  • IPA(key): /tau/
  • Rhymes: -au, -u

Verb

tau

  1. Nonstandard spelling of tahu.

Maori

Etymology 1

From Proto-Polynesian *taqu, from Proto-Oceanic, from Proto-Malayo-Polynesian *taqun (compare Malagasy taona, Malay tahun).

Noun

tau

  1. year (time it takes for the Earth to complete one revolution of the Sun)
  2. year (time it takes for any planetary body to make one revolution around another body)
  3. year (a period between set dates that mark a year)
  4. year (scheduled part of a calendar year spent in a specific activity)
  5. year (Julian year)
  6. year (level or grade at school or college)

Etymology 2

From Proto-Polynesian *tau, from Proto-Oceanic, from Proto-Malayo-Polynesian *taʀuq (compare Malagasy tao, Malay taruh).

Verb

tau

  1. to settle

Etymology 3

From Proto-Polynesian *tau, from Proto-Oceanic, from Proto-Malayo-Polynesian *taqu, from Proto-Austronesian *Caqu.

Noun

tau (used in the form of mātau)

  1. knowledge

Verb

tau (used in the form of mātau)

  1. (stative) to know

Minang

Etymology

From Proto-Malayic *tahu(ʔ), from Proto-Malayo-Chamic, from Proto-Malayo-Sumbawan, from Proto-Sunda-Sulawesi, from Proto-Malayo-Polynesian *taqu, from Proto-Austronesian *Caqu.

Verb

tau

  1. to know

Niuean

Etymology 1

From Proto-Polynesian *taqu, from Proto-Oceanic, from Proto-Malayo-Polynesian *taqun.

Noun

tau

  1. year (time it takes for the Earth to complete one revolution of the Sun)
  2. year (time it takes for any planetary body to make one revolution around another body)
  3. year (a period between set dates that mark a year)
  4. year (scheduled part of a calendar year spent in a specific activity)
  5. year (Julian year)
  6. year (level or grade at school or college)

Etymology 2

From Proto-Polynesian *tau, from Proto-Oceanic, from Proto-Malayo-Polynesian *taʀuŋ (compare Malay tarung).

Verb

tau

  1. fight

North Frisian

North Frisian cardinal numbers
 <  1 2 3  > 
    Cardinal : tau
    Ordinal : öler

Etymology

From Old Frisian twā. Compare Mooring North Frisian twäär, tou.

Numeral

tau

  1. (Föhr-Amrum, Heligoland, Sylt) two

Coordinate terms

Norwegian Bokmål

Etymology 1

From Old Norse tog (rope)

Noun

tau n (definite singular tauet, indefinite plural tau, definite plural taua or tauene)

  1. a rope
  2. (physics) tau lepton
  3. tau (Greek letter)
Synonyms
Derived terms

Etymology 2

Verb

tau

  1. imperative of taue

References

Norwegian Nynorsk

Alternative forms

Etymology

From Old Norse tog (“rope”)

Noun

tau n (definite singular tauet, indefinite plural tau, definite plural taua)

  1. a rope
  2. (physics) tau lepton
  3. tau (Greek letter)

Synonyms

Derived terms

References

Portuguese

Noun

tau m (plural taus)

  1. tau (name of the Greek letter Τ, τ)

Sotho

Noun

tau

  1. lion

Spanish

Noun

tau f (plural taus)

  1. tau; the Greek letter Τ, τ
  2. tauon (elementary particle)

Synonyms

See also

Tahitian

Adjective

tau

  1. some

Synonyms

References

Tongan

Etymology

From Proto-Polynesian *tau (compare Hawaiian kau, Maori tau, Niuean tau), from Proto-Oceanic, from Proto-Malayo-Polynesian *taʀuq (compare Indonesian taruh, Malagasy tao, Malay taruh).

Verb

tau

  1. fight

Tswana

Pronunciation

  • IPA(key): /ta.u/

Noun

tau class 9/10 (plural ditau)

  1. lion

Vietnamese

Pronunciation

Pronoun

tau

  1. Eye dialect spelling of tao, representing Central Vietnam Vietnamese.
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