Where does “rotula” come from?

rotula (Italian) comes from Latin rotula, from Arabic رَطْل, from Classical Syriac ܪܝܛܠܐ, from Classical Syriac ܠܝܛܪܐ, from French litre, from Medieval Latin litra, from Ancient Greek λίτρα, from Proto-Italic *līðrā — ingot.

rotula (Italian): patella, kneecap, rotula

Definitions

patella, kneecap, rotula

Ancestry of “rotula”, step by step

Step	Language	Word	Meaning
1	Latin	rotula	a small wheel; roll
2	Arabic	رَطْل	—
3	Classical Syriac	ܪܝܛܠܐ	—
4	Classical Syriac	ܠܝܛܪܐ	libra, pound
5	French	litre	litre
6	Medieval Latin	litra	—
7	Ancient Greek	λίτρα	litra, a Sicilian silver coin; libra, a unit of...
8	Proto-Italic	*līðrā	ingot

Words derived from “rotula”

rotule

Every word from Proto-Italic *līðrā →Every word from Ancient Greek λίτρα →Every word from Medieval Latin litra →