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theta

From Wiktionary, the free dictionary
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:

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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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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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 (used until 1943 in Brazil and 1911 in Portugal) 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