Where does “spinachium” come from?

spinachium (Medieval Latin) comes from Spanish espinaca, from Andalusian Arabic إِسْبِنَاخ, from Arabic إسفاناخ, from Persian اسفناج — spinach.

Ancestry of “spinachium”, step by step

Step	Language	Word	Meaning
1	Spanish	espinaca	spinach
2	Andalusian Arabic	إِسْبِنَاخ	—
3	Arabic	إسفاناخ	—
4	Persian	اسفناج	spinach

spinachium — Etymology, Origin & Word History | Etymology Explorer