- published: 26 Oct 2015
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Theta (uppercase Θ, lowercase θ or ϑ;Ancient Greek θῆτα [tʰɛ̂ːta]; Modern Greek θήτα [ˈθita]; UK /ˈθiːtə/, US /ˈθeɪtə/) 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 Ancient Greek, θ represented the aspirated voiceless dental plosive /t̪ʰ/, but in Modern Greek it represents the voiceless dental fricative /θ/.
In its archaic form, θ was written as a cross within a circle ( or Another symbol of a cross within a circle), and later, as a line or point within a circle ( or ).
In the Latin script used for the Gaulish language, theta developed into the tau gallicum, conventionally transliterated as Ð, although the bar extends across the centre of the letter. The phonetic value of the tau gallicum is thought to have been [t͡s].
The early Cyrillic letter fita (Ѳ, ѳ) developed from θ.
In the International Phonetic Alphabet, [θ] represents the voiceless dental fricative, as in thick or thin. It does not represent the consonant in the, which is the voiced dental fricative.
Chi may refer to:
CHI may stand for: