This is the 9523rd most frequent Polish word.
wirtualnej
"Virtual"
The word 'wirtualnej' is used as an adjective describing the noun 'platformie', indicating that the platform is virtual.
Zagrałem dzisiaj w grę na platformie wirtualnej.
I played a game today on a virtual platform.
Here, 'wirtualnej' modifies 'konferencji', signifying that the conference was conducted virtually or online.
Uczestniczyłem w konferencji wirtualnej ze specjalistami z różnych dziedzin.
I participated in a virtual conference with specialists from various fields.
'Wirtualnej' describes 'wycieczki', highlighting that the tour was taken virtually rather than physically.