This is the 11281st most frequent French word.
quinzième
Fifteenth.
Here, 'quinzième' is an ordinal number indicating the sequence, specifically the fifteenth occurrence.
C'était la quinzième fois que je visitais ce musée.
It was the fifteenth time I visited this museum.
In this context, 'quinzième' is used as an adjective describing the floor number of the building.
La fenêtre du quinzième étage offre une vue magnifique.
The window on the fifteenth floor offers a stunning view.
Here, 'quinzième' is utilized as an ordinal number to specify the number of years in the description of the anniversary.