Where does “ichthyocentaur” come from?

ichthyocentaur (English) comes from Ancient Greek ἰχθυοκένταυρος, from Ancient Greek ἰχθύς, from Ancient Greek ἀετός, from Proto-Hellenic ayyetós, from Proto-Indo-European h₂ewyetós, from Proto-Indo-European h₂éwis — bird.

ichthyocentaur (English): A centaurian sea being with the upper body of a human, the lower anterior half and forelegs of a horse, and the tailed half of a fish

Definitions

A centaurian sea being with the upper body of a human, the lower anterior half and forelegs of a horse, and the tailed half of a fish

Ancestry of “ichthyocentaur”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ἰχθυοκένταυρος	half-man and half-fish
2	Ancient Greek	ἰχθύς	fish
3	Ancient Greek	ἀετός	eagle; the constellation Aquila; omen
4	Proto-Hellenic	ayyetós	—
5	Proto-Indo-European	h₂ewyetós	—
6	Proto-Indo-European	h₂éwis	bird

Every word from Proto-Indo-European h₂éwis →Every word from Proto-Indo-European h₂ewyetós →Every word from Proto-Hellenic ayyetós →