This is the 7616th most frequent Portuguese word.
pre
"Pré" (Portuguese) means "pre" or "before" in English, indicating something prior in time or order.
The word 'pré' is used as a prefix indicating 'before' or 'pre-', modifying 'lançamento' to mean 'pre-release'.
O pré-lançamento do filme será amanhã.
The pre-release of the movie will be tomorrow.
In this sentence, 'pré' modifies 'escolar' to indicate the period before regular schooling.
A escola oferece aulas no período pré-escolar.
The school offers classes in the pre-school period.
Here, 'prévio' is used as an adjective derived from 'pré', meaning 'prior' or 'preliminary'.