Where does “megattera” come from?

megattera (Italian) comes from Ancient Greek μέγας, from Proto-Indo-European meǵh₂s — great.

megattera (Italian): humpback whale

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	μέγας	big, large; great, mighty, loud; marvelous,...
2	Proto-Indo-European	meǵh₂s	great

megattera — Etymology, Origin & Word History | Etymology Explorer