Where does “caldaia” come from?

caldaia (Italian) comes from Latin caldāria, from Latin caldārius, from Latin -ārius, from Proto-Italic *-āzios.

caldaia (Italian): boiler; cauldron

Definitions

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

caldaia — Etymology, Origin & Word History | Etymology Explorer