This is the 15816th most frequent Polish word.
słowiański
"Slavic" – relating to the Slavs or their languages and culture.
The word 'słowiański' here is used as an adjective describing 'językiem' (language), referring to the linguistic and cultural family of the Slavs.
Polski jest językiem słowiańskim.
Polish is a Slavic language.
In this sentence, 'słowiańskich' is an adjective modifying 'tradycji' (traditions), emphasizing their origin within Slavic heritage.
Badano wpływ słowiańskich tradycji na współczesną kulturę.
The influence of Slavic traditions on modern culture was studied.
Here, 'słowiańską' is an adjective modifying 'mitologią' (mythology), related to myths and legends from Slavic cultures.