Where does “caldeirão” come from?

caldeirão (Portuguese) comes from Portuguese caldeira, from Old Portuguese caldeyra, from Latin caldāria, from Latin caldārius, from Latin -ārius, from Proto-Italic *-āzios — Forms relational adjectives to nouns (and rarely numerals).

caldeirão (Portuguese): cauldron; pothole; melting pot

Definitions

cauldron; pothole; melting pot

Ancestry of “caldeirão”, step by step

Step	Language	Word	Meaning
1	Portuguese	caldeira	boiler device for heating circulating water
2	Old Portuguese	caldeyra	—
3	Latin	caldāria	warm bath
4	Latin	caldārius	Of, pertaining to or suitable for warmth or bathing
5	Latin	-ārius	er
6	Proto-Italic	*-āzios	Forms relational adjectives to nouns (and rarely numerals)

Every word from Proto-Italic *-āzios →Every word from Latin -ārius →Every word from Latin caldārius →