Where does “ettagonu” come from?

ettagonu (Maltese) comes from Italian ettagono, from Ancient Greek ἑπτάγωνον, from Ancient Greek ἑπτάγωνος, from Ancient Greek ἑπτά, from Proto-Hellenic heptə́, from Proto-Indo-European septḿ̥ — seven.

ettagonu (Maltese): heptagon

Definitions

heptagon

Ancestry of “ettagonu”, step by step

Step	Language	Word	Meaning
1	Italian	ettagono	heptagon; heptagonal
2	Ancient Greek	ἑπτάγωνον	—
3	Ancient Greek	ἑπτάγωνος	seven-angled
4	Ancient Greek	ἑπτά	seven
5	Proto-Hellenic	heptə́	seven
6	Proto-Indo-European	septḿ̥	seven

Every word from Proto-Indo-European septḿ̥ →Every word from Proto-Hellenic heptə́ →Every word from Ancient Greek ἑπτά →