Where does “cédille” come from?

cédille (French) comes from Spanish cedilla, from Old Spanish ceda, from Latin zēta, from Ancient Greek ζῆτα, from Phoenician 𐤆, from Egyptian ?.

cédille (French): cedilla

Definitions

Step	Language	Word	Meaning
1	Spanish	cedilla	Name of the letter ç; cedilla
2	Old Spanish	ceda	The name of the Latin-script letter Z
3	Latin	zēta	—
4	Ancient Greek	ζῆτα	zeta, the name for the sixth letter Ζ, ζ of the...
5	Phoenician	𐤆	this
6	Egyptian	?	—