This is the 8987th most frequent Turkish word.
tanıştıkları
"The ones they met" or "whom they met."
In this sentence, 'tanıştıkları' refers to the act of meeting each other, indicating the mutual action of Ahmet and Zeynep in the past.
Ahmet ve Zeynep'in ilkokulda tanıştıkları söyleniyor.
It is said that Ahmet and Zeynep met in elementary school.
Here, 'tanıştıkları' points to the specific time or occasion when the individuals first met each other, functioning as a temporal reference.
Tanıştıkları zamandan beri çok iyi arkadaş oldular.
They have become very good friends since the time they met.
In this example, 'tanıştıkları' defines the group of individuals whom they had met at the youth camp, acting as a descriptor for the direct object of the sentence.