This is the 5842nd most frequent Polish word.
zarejestrowały
"Zarejestrowały" means "registered" (past tense, plural, feminine).
The word 'zarejestrowały' is used here to denote an intentional recording or noticing of an occurrence.
Organizacje zarejestrowały ogromny wzrost liczby nowych członków w tym roku.
Organizations have registered a significant increase in the number of new members this year.
In this context, 'zarejestrowały' means capturing or recording something by a device, like cameras.
Kamery bezpieczeństwa zarejestrowały podejrzaną aktywność w noc zdarzenia.
Security cameras recorded suspicious activity on the night of the event.
Here, 'zarejestrowały' refers to the formal process of recording or registering applications by authorities.