This is the 15086th most frequent Turkish word.
seyahatinin
"Your travel" or "your journey."
The word 'seyahatinin' here refers to 'your trip' in a possessive form, indicating ownership by a specific person.
Seyahatinin nasıl geçtiğini bana anlatır mısın?
Can you tell me how your trip went?
In this sentence, 'seyahatinin' conveys the possession (your trip) while also connecting to an inquiry about its duration.
Seyahatinin ne kadar süre olduğunu bilmiyorum.
I do not know the duration of your trip.
Here, 'seyahatinin' is again used in a possessive sense, establishing the trip's association with someone.