Testlerinin

Testlerinin is a Turkish morphological form rather than a standalone term. It functions as a third-person plural possessive construction attached to the plural noun testler (tests) to express possession by multiple people or groups. In meaning, testlerinin corresponds roughly to “their tests” or “the tests of them.” The form is created by combining the plural suffix with the appropriate third-person plural possessive suffix, and it follows Turkish vowel harmony rules in actual spelling.

In usage, testlerinin appears in contexts that discuss the tests belonging to others. It is commonly seen in phrases like testlerinin sonuçları (the results of their tests) or testlerinin güvenilirliği (the reliability of their tests). Because Turkish lacks an explicit definite article, possessive constructions like testlerinin help indicate whose tests are being referred to and can be combined with a noun to form a larger noun phrase, such as testlerinin sonuçlarıyla (with the results of their tests).

Related forms include testinin or testinin, which would express possession by a singular owner (his/her/its test), as well as other possessive-person suffixes that attach to noun stems. The general pattern follows Turkish grammar, where pluralization (ler/lar) and possessive suffixes are appended to the noun and must harmonize with surrounding vowels.

See also Turkish grammar, possessive suffixes, plural suffixes, Turkish noun morphology.