Where does “siemieniaty” come from?

siemieniaty (Polish) comes from Polish siemię, from Proto-Slavic *sě̀mę — seed.

Ancestry of “siemieniaty”, step by step

StepLanguageWordMeaning
1Polishsiemięseed, flaxseed
2Proto-Slavic*sě̀męseed
Every word from Proto-Slavic *sě̀mę →Every word from Polish siemię →
siemieniaty — Etymology, Origin & Word History | Etymology Explorer