Where does “ramulus” come from?

ramulus (Latin) comes from Latin rāmus, from Proto-Italic *wrād-mo-, from Proto-Indo-European wréh₂ds — root.

Ancestry of “ramulus”, step by step

Step	Language	Word	Meaning
1	Latin	rāmus	—
2	Proto-Italic	*wrād-mo-	—
3	Proto-Indo-European	wréh₂ds	root

ramulus — Etymology, Origin & Word History | Etymology Explorer