This is the 396th most frequent Polish word.
komisji
"Komisji" means "commission" or "committee" (genitive or dative case in Polish).
In this sentence, "komisji" refers to a group or board of individuals formed to make decisions or give judgements.
Członkowie komisji zatwierdzili nowy plan działania.
The members of the commission approved the new action plan.
Here, "komisji" is presented in the genitive case indicating that the results belong to the commission.
Rozmawialiśmy o wynikach pracy komisji.
We discussed the results of the commission's work.
In this context, "komisji" is in the genitive case used to denote that the representative is from the commission.