This is the 3288th most frequent Polish word.
telewizyjnego
"Telewizyjnego" means "television" or "of television" (adjective, relating to television).
The word 'telewizyjnego' is used here as an adjective to describe the word 'program', indicating that the program is related to television.
Obejrzałem wieczorem ciekawy program telewizyjny.
I watched an interesting television program in the evening.
In this sentence, 'telewizyjnego' is used adjectivally to describe the noun 'show', specifying that the show pertains to television.
Produkcja telewizyjnego show wymaga dużego zespołu.
The production of a television show requires a large team.
Here, 'telewizyjnego' modifies the plural noun 'formatów', indicating that the formats are from the domain of television.