This is the 658th most frequent Italian word.
pro
The Italian word "pro" means "advantage" or "for" (in favor of something).
'Pro' is used as a prefix implying support or advocacy for the concept that follows it, in this case, 'environment'.
Sono a favore delle sue idee pro ambiente.
I support her pro-environment ideas.
'Pro' is used as a noun referring to advantages or positive aspects.
Abbiamo analizzato i pro e i contro della proposta.
We analyzed the pros and cons of the proposal.
'Pro' is used informally as a noun meaning an expert or professional in a specific field.