This is the 3944th most frequent Polish word.
szczecińskiej
"Of Szczecin" (relating to the city Szczecin in Poland).
The word 'szczecińskiej' here is an adjective derived from the name 'Szczecin', used in the locative case to describe a type or origin of the villa.
Mieszkałem w pięknej willi szczecińskiej.
I lived in a beautiful Szczecin villa.
'Szczecińskiej' is used as an adjective in the genitive case to modify 'university', indicating its association with the city of Szczecin.
Historia szczecińskiej uczelni jest bardzo bogata.
The history of the Szczecin university is very rich.
Here, 'szczecińskiej' is an adjective in the genitive feminine singular form, describing the conference related to Szczecin.