Where does “lagena” come from?

lagena (Latin) comes from Ancient Greek λάγηνος, from Ancient Greek λᾰ́γῡνος.

Ancestry of “lagena”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	λάγηνος	Alternative form of λᾰ́γῡνος; flask, pitcher;...
2	Ancient Greek	λᾰ́γῡνος	—

lagena — Etymology, Origin & Word History | Etymology Explorer