This is the 15th most frequent Turkish word.
olduğu
"Olduğu" means "that it is" or "as it is" in English, depending on context.
The word 'olduğu' is used to indicate the completion or result of someone's growing up, derived from the verb 'olmak'.
Burası onun büyük olduğu yer.
This is the place where he/she grew up.
The word 'olduğu' connects the description of the period with the condition of the work being difficult.
Bu, işin zor olduğu bir dönem.
This is a time when the work is hard.
The word 'olduğu' links the days being remembered to the specific weather condition, originating from the verb 'olmak'.