This is the 13445th most frequent Polish word.
parlamentarnym
"Parlamentarnym" means "parliamentary" in English.
Here, 'parlamentarnym' is used as an adjective describing the type of elections.
W wyborach parlamentarnym głosowało wiele osób.
Many people voted in the parliamentary elections.
In this case, 'parlamentarnej' is describing the conference as related to the parliament.
Spotkaliśmy się na konferencji parlamentarnej w Warszawie.
We met at a parliamentary conference in Warsaw.
Here, 'parlamentarnym' is a descriptive term for the system in which the representative was elected.