This is the 13180th most frequent Turkish word.
katılmalarının
"Their participation."
Used to express possession with a noun indicating the subject's action of attending.
Onların bu toplantıya katılmalarının önemli olduğunu düşünüyorum.
I think their participation in this meeting is important.
Used to denote the subject's action of attending as the topic of inquiry.
Etkinliklere katılmalarının nedeni soruldu.
They were asked the reason for their participation in the events.
Used to describe the result or consequence of the subject's participation.