This is the 7757th most frequent Portuguese word.
preliminar
Preliminary; initial or preparatory.
Here, "preliminar" is used as an adjective to describe the type of meeting, indicating it was an initial or preparatory meeting.
A reunião preliminar aconteceu ontem à tarde.
The preliminary meeting took place yesterday afternoon.
In this sentence, "preliminares" serves as an adjective qualifying "notas," showing these are preparatory notes meant for an event.
Tenho que revisar as notas preliminares antes da apresentação.
I need to review the preliminary notes before the presentation.
The term "preliminar" here describes the study as being initial or exploratory, intended as a precursor to further detailed research.