Where does “Сена” come from?

Сена (Russian) comes from French Seine, from Late Latin sagena, from Ancient Greek σαγήνη — large dragnet, seine; hunting net.

Ancestry of “Сена”, step by step

StepLanguageWordMeaning
1FrenchSeineseine (for fishing)
2Late Latinsagenaseine
3Ancient Greekσαγήνηlarge dragnet, seine; hunting net
Every word from Ancient Greek σαγήνη →Every word from Late Latin sagena →Every word from French Seine →