kültürlerinin
Kültürlerinin is a Turkish word used to express possession by a plural subject and to indicate the genitive relation of “of their cultures” or “their cultures’.” It is formed through a sequence of suffixes added to the noun kültür (culture): the plural suffix -ler to form kültürler (cultures), followed by the possessive/genitive chain that yields -lerinin at the end. The resulting form signals that the possessed element belongs to or originates from more than one group.
In Turkish, this kind of suffix chain is a common way to bundle information about number, possession,
Usage and examples illustrate its meaning in discourse about culture and identity. For example, Kültürlerinin gelenekleri
See also: Turkish grammar, possessive suffixes, genitive case, plural marking.