This is the 8692nd most frequent Polish word.
ratajskiego
"Ratajskiego" is the possessive or adjectival form of "Ratajski," often referring to something related to Ratajski (e.g., a name or place).
Here, 'Ratajskiego' is the genitive case of the proper noun 'Ratajski,' used to denote possession or association with the street named after someone or something related to 'Ratajski.'
Mieszkałem kiedyś na ulicy Ratajskiego w Poznaniu.
I used to live on Ratajskiego Street in Poznań.
In this context, 'ratajskiego' serves as an adjective describing the university, implying it has an association with or is designated by 'Ratajski.'
Dyskusja skupiała się na problemach ratajskiego uniwersytetu.
The discussion focused on the issues of the Ratajski university.
Here, 'ratajskiego' describes the park, showing that it is named after or related to 'Ratajski.'