theta

== English == === Etymology === Borrowed from Ancient Greek θῆτα (thêta). === Pronunciation === (UK) IPA(key): /ˈθiːtə/ (US, Canada) IPA(key): /ˈθeɪtə/, [ˈθeɪɾə], /ˈθitə/ (General Australian, New Zealand) IPA(key): /ˈθæɪtə/, [ˈθæɪɾə] (Hong Kong) IPA(key): /ˈθeɪ.ta/, [fei̯˥ tʰaː˩] Rhymes: -iːtə, -eɪtə === Noun === theta (plural thetas) The eighth letter of the Modern Greek alphabet, ninth in Old Greek: Θ, θ. (mathematics) The measure of an angle. (aviation, by extension) Pitch angle; the angle between an aircraft's longitudinal axis and the horizontal plane. Synonym: deck angle (finance) The sensitivity of the value of a derivative with respect to time; the "time decay". (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). (phonology) The voiceless dental fricative represented by θ. ==== Hypernyms ==== (measure of derivative price sensitivity): Greeks (includes list of coordinate terms) ==== Coordinate terms ==== (pitch angle of an aircraft): alpha beta gamma ==== Derived terms ==== ==== Descendants ==== → Malay: teta ==== Translations ==== ==== See also ==== (Greek-script letter names) alpha, beta, gamma, delta, epsilon, zeta, eta, theta, iota, kappa, lambda, mu, nu, xi, omicron, pi, rho, sigma, tau, upsilon, phi, chi, psi, omega == Catalan == === Etymology === Borrowed from Ancient Greek θῆτα (thêta). === Pronunciation === IPA(key): (Central, Balearic) [ˈtɛ.tə] IPA(key): (Valencia) [ˈte.ta] === Noun === theta f (plural thetes) theta; the Greek letter Θ (lowercase θ) === Further reading === “theta”, in Diccionari de la llengua catalana [Dictionary of the Catalan Language] (in Catalan), second edition, Institute of Catalan Studies [Catalan: Institut d'Estudis Catalans], April 2007 “theta”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2026 “theta” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua. == Czech == === Alternative forms === théta === Etymology === Borrowed from Ancient Greek θῆτα (thêta). === Pronunciation === IPA(key): [ˈtxɛːta] IPA(key): [ˈtɛːta] === Noun === theta n or f theta (Greek letter) ==== Declension ==== when feminine: Indeclinable when neuter. == Italian == === Etymology === From the Ancient Greek θῆτα (thêta). === Pronunciation === IPA(key): /ˈtɛ.ta/ Rhymes: -ɛta Hyphenation: thè‧ta === Noun === theta m or f (invariable) theta (Greek letter) === References === == Pali == === Alternative forms === === Adjective === theta reliable trustworthy == Polish == === Etymology === Learned borrowing from Ancient Greek θῆτα (thêta), from Phoenician 𐤈 (ṭ‬ /⁠ṭēt⁠/). === Pronunciation === IPA(key): /ˈtɛ.ta/ Rhymes: -ɛta Syllabification: the‧ta === Noun === theta f theta (Greek letter Θ, θ) ==== Declension ==== === Further reading === theta in Polish dictionaries at PWN == Portuguese == === Noun === theta f (plural thetas) pre-reform spelling (used until 1943 in Brazil and 1911 in Portugal) of teta == Spanish == === Etymology === Borrowed from Ancient Greek θῆτα (thêta). === Pronunciation === IPA(key): /ˈteta/ [ˈt̪e.t̪a] Rhymes: -eta Syllabification: the‧ta === Noun === theta f (plural thetas) theta; the Greek letter Θ, θ Synonyms: zeta, tita