Wiktionary

theta

See also: Theta, théta, thèta, thêta, and þeta

English

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Ancient Greek Alphabet
←
eta
    →
iota
Θ θ
Ancient Greek: θῆτα
Wikipedia article on theta

Etymology

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Borrowed from Ancient Greek θῆτα (thêta).

Pronunciation

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Noun

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theta (plural thetas)

  1. The eighth letter of the Modern Greek alphabet, ninth in Old Greek: Θ, θ.
  2. (mathematics) The measure of an angle.
  3. (aviation, by extension) Pitch angle; the angle between an aircraft's longitudinal axis and the horizontal plane.
  4. (finance) The sensitivity of the value of a derivative with respect to time; the "time decay".
  5. (biology) Designating a level of brain activity as measured by electroencephalography having a frequency of between four and seven cycles per second (associated with drowsiness in adults).
    • 2018 September 19, Meghan O'Gieblyn, “The Most Unread Book Ever Acclaimed”, in The Paris Review:
      The reader is less likely to throw the book down in a fit of disgust than she is to be lulled into a theta state, a highway hypnosis induced by page after page of incantatory prose.
  6. (phonology) The voiceless dental fricative represented by θ.

Hypernyms

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

Coordinate terms

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(pitch angle of an aircraft):

Derived terms

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Descendants

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  • → Malay: teta

Translations

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Catalan

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Etymology

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Borrowed from Ancient Greek θῆτα (thêta).

Pronunciation

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Noun

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theta f (plural thetes)

  1. theta; the Greek letter Θ (lowercase θ)

Further reading

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Czech

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Alternative forms

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Etymology

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Borrowed from Ancient Greek θῆτα (thêta).

Pronunciation

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Noun

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theta n or f

  1. theta (Greek letter)

Declension

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when feminine:

Declension of theta (hard feminine)
singular plural
nominative theta thety
genitive thety thet
dative thetě thetám
accusative thetu thety
vocative theto thety
locative thetě thetách
instrumental thetou thetami

Indeclinable when neuter.

Italian

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Italian Wikipedia has an article on:
Wikipedia it

Etymology

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From the Ancient Greek θῆτα (thêta).

Pronunciation

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Noun

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theta m or f (invariable)

  1. theta (Greek letter)

References

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  1. ^ theta in Treccani.it – Vocabolario Treccani on line, Istituto dell'Enciclopedia Italiana

Pali

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Alternative forms

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Alternative scripts

Adjective

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theta

  1. reliable
  2. trustworthy

Polish

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Polish Wikipedia has an article on:
Wikipedia pl

Etymology

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Learned borrowing from Ancient Greek θῆτα (thêta), from Phoenician 𐤈 (ṭ‬ /⁠ṭēt⁠/).

Pronunciation

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Noun

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theta f

  1. theta (Greek letter Θ, θ)

Declension

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Declension of theta
singular plural
nominative theta thety
genitive thety thet
dative thecie thetom
accusative thetę thety
instrumental thetą thetami
locative thecie thetach
vocative theto thety

Further reading

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  • theta in Polish dictionaries at PWN

Portuguese

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Noun

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theta f (plural thetas)

  1. Pre-reform spelling (until Brazil 1943/Portugal 1911) of teta.

Spanish

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Etymology

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Borrowed from Ancient Greek θῆτα (thêta).

Pronunciation

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Noun

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theta f (plural thetas)

  1. theta; the Greek letter Θ, θ
    Synonyms: zeta, tita
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