ASCII Character θ

Theta (UK: /ˈθiːtə/, US: /ˈθeɪtə/; uppercase: Θ or ϴ; lowercase: θ or ϑ; Ancient Greek: θέτα thē̂ta [tʰɛ̂ːta]; Modern: θήτα thī́ta [ˈθita]) 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. n ancient times, Tau was used as a symbol for life or resurrection, whereas the eighth letter of the Greek alphabet, theta, was considered the symbol of death.