This is the 9077th most frequent Turkish word.
toplantısı
"Meeting" or "assembly" (possessive form).
The word "toplantısı" here refers to a specific 'meeting' in the business context, denoted as 'iş toplantısı' (business meeting).
Bugün önemli bir iş toplantısı gerçekleştirdik.
Today, we held an important business meeting.
In this sentence, "toplantısı" signifies the 'meeting' related to the association, described as 'derneğin yıllık toplantısı' (the association's annual meeting).
Derneğin yıllık toplantısı haftaya yapılacak.
The annual meeting of the association will be held next week.
Here, "toplantısı" denotes a 'meeting' related to children's books, specifically designed to discuss this subject, indicated as 'çocuk kitapları toplantısı' (meeting about children's books).