This is the 7762nd most frequent Polish word.
marcinkiewicza
"Marcinkiewicza" is a possessive form of the Polish surname "Marcinkiewicz," meaning "of Marcinkiewicz" (e.g., something belonging to or associated with Marcinkiewicz).
Proper noun in genitive case, showing possession or authorship.
Mój przyjaciel kupił książkę autorstwa Marcinkiewicza.
My friend bought a book authored by Marcinkiewicz.
Proper noun in genitive case, indicating whose theory is being referred to.
Czy możesz wytłumaczyć teorię Marcinkiewicza?
Can you explain Marcinkiewicz's theory?
Proper noun in accusative case, functioning as the direct object of the sentence.