Where does “caldaria” come from?

caldaria (Latin) comes from Latin caldārius, from Latin -ārius, from Proto-Italic *-āzios.

Ancestry of “caldaria”, step by step

Step	Language	Word	Meaning
1	Latin	caldārius	—
2	Latin	-ārius	—
3	Proto-Italic	*-āzios	—

caldaria — Etymology, Origin & Word History | Etymology Explorer