rodkowym
Rrodkowym is not a standard standalone Polish word. In standard Polish, the adjective meaning central or middle is środkowy, from which forms like rodkowy would be produced in certain inflected contexts. The form rodkowym does not appear in correct Polish spelling and is typically the result of a typographical error or a nonstandard variant. The ordinary instrumental singular masculine/neuter form that would be encountered in correct Polish is środkowym.
Środkowy is formed from the noun środek, meaning center or middle, with the adjectival suffix -owy. It
As a grammatical form, środkowy changes according to gender, number, and case. For masculine singular instrumental
Etymologically, środkowy derives from środek, which traces back to Proto-Slavic terms for center or middle and