This is the 12234th most frequent Turkish word.
haftasının
"Haftasının" means "of the week" in English.
'Haftasının' is the possessive form of 'hafta' meaning 'week', showing ownership by the 'bu' (this) which makes it refer to 'this week's'.
Bu haftasının etkinlikleri çok yoğun.
This week's events are very busy.
'Haftasının' in this context is used metaphorically to indicate a week-specific timeframe related to the book, again showcasing possessive form.
Kitabın haftasının incelemesi başlıyor.
The review of the book's week is starting.
'Haftasının' refers to the week belonging to 'school', indicating that it describes the school week's beginning.