This is the 13092nd most frequent Polish word.
odtajnienie
"Declassification" – the act of making previously classified information open to the public.
The word 'odtajnienia' is used as a noun referring to the act of making confidential information publicly accessible.
Proces odtajnienia dokumentów trwał kilka miesięcy.
The process of declassification of the documents took several months.
Here, 'odtajnienie' is used as the subject of the sentence, emphasizing the action of rendering information open.
Odtajnienie raportu ujawniło wiele interesujących faktów.
The declassification of the report revealed many interesting facts.
In this sentence, 'odtajnieniu' (dative case) is used to denote the circumstance under which the events occurred.