Where does “aksamientowy” come from?

aksamientowy (Old Polish) comes from Old Polish -owy, from Proto-Slavic -ovъ — of, belonging to.

Ancestry of “aksamientowy”, step by step

StepLanguageWordMeaning
1Old Polish-owyappended to nouns to form adjectives; -y
2Proto-Slavic-ovъof, belonging to
Every word from Proto-Slavic -ovъEvery word from Old Polish -owy