gyjteményi
The term "gyjteményi" is a Hungarian adjective derived from the noun "gyűjtemény," which translates to "collection" or "exhibition" in English. Therefore, "gyjteményi" generally refers to something related to a collection, belonging to a collection, or pertaining to the act of collecting or exhibiting.
In a museum context, "gyjteményi darab" would mean an item that is part of the museum's collection.
The adjective can also be used more broadly to describe anything associated with a gathering or assemblage