This is the 8194th most frequent Turkish word.
meclisinden
"From its council/assembly."
The word 'meclisinden' here refers to the assembly of the country and indicates the source or origin of the actions, in this case, passing laws.
Ülke meclisinden yeni kanunlar geçmesi bekleniyor.
New laws are expected to pass in the country's assembly.
In this sentence, 'meclisinden' refers to the ancient Greek assembly as the source of the topic being discussed in the book.
Yazarın kitabında, antik Yunan meclisinden bahsediliyor.
The author's book mentions the ancient Greek assembly.
Here, 'meclisinden' is used to refer to the board of the company as the origin of the awaited approval.