Where does “sosa” come from?

sosa (Catalan) comes from Arabic سُوَيْدَاء — {{w|Suaeda}}; seepweed.

Ancestry of “sosa”, step by step

Step	Language	Word	Meaning
1	Arabic	سُوَيْدَاء	{{w\|Suaeda}}; seepweed

sosa — Etymology, Origin & Word History | Etymology Explorer