Where does “ⲕⲏⲧⲟⲥ” come from?

ⲕⲏⲧⲟⲥ (Coptic) comes from Ancient Greek κῆτος — whale, sea monster; abyss.

ⲕⲏⲧⲟⲥ (Coptic): sea monster

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	κῆτος	whale, sea monster; abyss

ⲕⲏⲧⲟⲥ — Etymology, Origin & Word History | Etymology Explorer