devirleri
Devirleri is a Turkish word formed from the noun devir (period, era, cycle, turnover) combined with the suffix -leri, often indicating third-person possessive or plural. In literal use it means "their eras" or "the eras of", and it appears in historical, legal, financial and literary contexts to refer to distinct time spans, phases of development, or transfers of authority and property.
Etymology traces devir to Ottoman usage influenced by Arabic and Persian roots (dawr/devr), conveying the idea
Grammatically, devirleri can function as a bound form whose exact meaning depends on context and the possessor