pluráljának
Pluráljának is a grammatical term related to the plural form of a noun in Hungarian. Specifically, it refers to the possessive form of a plural noun. In Hungarian, nouns can take possessive suffixes to indicate ownership, and when the owned noun is plural, the structure becomes pluráljának.
For example, if the noun "ház" (house) is singular and owned by "én" (I), it would be
The suffix indicating the third-person singular possessor, when attached to a plural noun, results in the "-ainak"