The Greek letter theta was a symbol of death in this period (the Greek for death is thanatos). It was also used in the various account books to indicate a cancelled entry. Arab mathematicians recognised its value and incorporated it in the mid-10c as zero, a concept of Indian origin.

Dictionary of Medieval Terms and Phrases. .

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  • thêta — thêta …   Dictionnaire des rimes

  • Thêta — Utilisation Alphabets Grec Ordre 8e Phonèmes principaux …   Wikipédia en Français

  • Theta — (uppercase Θ, lowercase θ or IPA|ϑ; el. Θήτα) is the eighth letter of the Greek alphabet, derived from the Phoenician letter Teth. In the system of Greek numerals it has a value of 9. In Classical Greek θ represented an aspirated voiceless dental …   Wikipedia

  • Theta — Thêta Thêta Graphies Graphie {{{graphie}}} Capitale Θ Bas de …   Wikipédia en Français

  • thêta — [ tɛta ] n. m. • 1580; mot gr. ♦ Huitième lettre de l alphabet grec (θ) à laquelle correspond th, dans les mots français issus du grec. ● thêta nom masculin Huitième lettre de l alphabet grec (Θ, θ), qui notait une occlusive dentale sourde… …   Encyclopédie Universelle

  • THETA — olim capitalis sententiae praefigi solitum est. Isidor. l. 1. c. 20. et 23. Pseudo Cornutus ad v. 12. Sat. 4. A. Persii, Iudices inquit, literam Theta apponunt ad nomina eorum, quos suppliciô afficiunt, merito, Θῆτα ἀπὸ τοῦ θανάτου quod quasi… …   Hofmann J. Lexicon universale

  • Theta — The ta, n. [L., fr. Gr. qh^ta, the Greek letter [theta], [Theta].] A letter of the Greek alphabet corresponding to th in English; sometimes called the unlucky letter, from being used by the judges on their ballots in passing condemnation on a… …   The Collaborative International Dictionary of English

  • theta — (izg. tȅta) sr DEFINICIJA 1. lingv. osmo slovo grčkog alfabeta 2. pov. u grčkom sustavu bilježenja brojeva oznaka za 9 ETIMOLOGIJA grč. thȇta …   Hrvatski jezični portal

  • theta — [thāt′ə, thēt′ə] n. [Gr thēta: of Sem orig., akin to Heb tet] the eighth letter of the Greek alphabet (Θ, ϑ, θ) …   English World dictionary

  • Theta — Theta, griechischer Name des Th …   Pierer's Universal-Lexikon

  • Thēta — Thēta, der achte Buchstabe des griech. Alphabets (Θ, ϑ), entsprechend dem »Th« …   Meyers Großes Konversations-Lexikon

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