ซีตา

Also known as ζ, zeta

Zeta (, ; uppercase Ζ, lowercase ζ; (Ancient Greek and Katharevousa: ζῆτα, , classical or zē̂ta; zíta) is the sixth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 7. It was derived from the Phoenician letter zayin (𐤆). Letters that arose from zeta include the Roman Z and Cyrillic З.