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zeta

/ˈθeta/

noun, feminine/ˈθeta/plural: zetas

the letter Z; zeta; the Greek letter Ζ, ζ

Synonyms: zeda, dseda, dseta

From Old Spanish ceda, from Latin zēta or its etymon, Ancient Greek ζῆτα (zêta).

noun, feminine/ˈθeta/plural: zetas

theta; the Greek letter Θ, θ

Synonyms: theta, tita

Borrowed from Ancient Greek θῆτα (thêta).