Where does “vaporo” come from?

vaporo (Latin) comes from Latin -ō, from Proto-Indo-European -ō — Derives nouns from roots.

vaporo (Latin): I steam, reek; I smoke, fumigate

Definitions

Step	Language	Word	Meaning
1	Latin	-ō	suffixed to nouns or adjectives. Originally a-stem nouns. Later extended to nouns with other stems. Forms regular first-conjugation verbs
2	Proto-Indo-European	-ō	Derives nouns from roots