This is the 6148th most frequent Turkish word.
yüzüncü
The Turkish word "yüzüncü" means "hundredth" in English.
The word 'yüzüncü' is used here as an ordinal number meaning 'hundredth', referring to the year in the anniversary.
Bu yıl yüzüncü yıl dönümünü kutluyoruz.
This year we celebrate the hundredth anniversary.
In this sentence, 'yüzüncü' is used as an ordinal adjective describing someone's placement in the race.
Koşuda yüzüncü oldu.
He/she came in hundredth in the race.
Here, 'yüzüncü' specifies the ordinal position of a page within a book.