Where does “zeta” come from?

Zeta comes from ancient Greek ζῆτα, borrowed from Hebrew זין, though the original meaning is uncertain.

zeta (English): The sixth letter of the modern Greek alphabet (Ζ, ζ) preceded by epsilon (Ε, ε) and followed by eta, (Η, η); or the seventh letter in the ancient Greek alphabet, in which it is preceded by digamma (Ϝ, ϝ)

Definitions

The sixth letter of the modern Greek alphabet (Ζ, ζ) preceded by epsilon (Ε, ε) and followed by eta, (Η, η); or the seventh letter in the ancient Greek alphabet, in which it is preceded by digamma (Ϝ, ϝ)

Ancestry of “zeta”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ζῆτα	zeta, the name for the sixth letter Ζ, ζ of the...
2	Phoenician	𐤆	this
3	Egyptian	?	—

Every word from Egyptian ? →Every word from Phoenician 𐤆 →Every word from Ancient Greek ζῆτα →