This is the 1100th most frequent Turkish word.
bölümünü
"Section/part of it."
In this sentence, "bölümünü" refers to 'the chapter'—a section of a book—indicating the specific part that was read. The word is in the accusative case, showing that it is the object of the action.
Bu kitabın üçüncü bölümünü okudum.
I read the third chapter of this book.
Here, "bölümünü" refers to 'the episode,' denoting a segment of a television series, and is in the accusative case as the object being watched.
Televizyonda dizinin yeni bölümünü izledik.
We watched the new episode of the series on television.
In this example, "bölümünü" signifies 'section,' referring to a part of the project that was challenging. As with the previous examples, it is in the accusative case, pointing to the specific section discussed.