Where does “cavaedium” come from?

cavaedium (English) comes from Latin cavaedium, from Latin cavum, from Proto-Indo-European ḱówHwos — cavity.

cavaedium (English): The central hall or court within an Ancient Roman...

Definitions

Step	Language	Word	Meaning
1	Latin	cavaedium	cavaedium, atrium, central hall
2	Latin	cavum	a hole, cavity, depression, pit, opening; a cave,...
3	Proto-Indo-European	ḱówHwos	cavity

cavaedium — Etymology, Origin & Word History | Etymology Explorer