This is the 17049th most frequent Polish word.
wyznaczonego
"Wyznaczonego" means "designated" or "assigned."
The word 'wyznaczonego' is used here as an adjective describing 'miejsce,' meaning the 'designated place.'
Mamy spotkanie w wyznaczonym miejscu.
We have a meeting at the designated place.
The word 'wyznaczonego' acts as an attribute for 'terminie,' signifying the 'assigned time frame.'
Zadanie zostało wykonane w wyznaczonym terminie.
The task was completed within the assigned time frame.
Here, 'wyznaczonego' modifies 'numer,' indicating the 'designated number' assigned to each participant.