Where does “Strombolian” come from?

Strombolian (English) comes from English stromboli, from Italian Stromboli, from Ancient Greek Στρογγύλη, from Ancient Greek -ή, from Ancient Greek -ᾱ, from Proto-Indo-European -éh₂.

Strombolian (English): Of, or pertaining to, the island or volcano of...

Definitions

Of, or pertaining to, the island or volcano of...

Ancestry of “Strombolian”, step by step

Step	Language	Word	Meaning
1	English	stromboli	A type of turnover filled with various cheeses,...
2	Italian	Stromboli	Stromboli one of the Aeolian islands
3	Ancient Greek	Στρογγύλη	Strongyle, the name of various Greek-settled isles
4	Ancient Greek	-ή	suffix of feminine nouns in the [[Appendix:Ancient Greek first declension
5	Ancient Greek	-ᾱ	nominal suffix
6	Proto-Indo-European	-éh₂	—

Every word from Proto-Indo-European -éh₂ →Every word from Ancient Greek -ή →Every word from Ancient Greek -ᾱ →