oppilasjärjestö (Finnish) comes from Finnish oppilas, from Finnish -las, from Finnish -lä, from Finnish -as, from Proto-Finnic -s, from Proto-Finno-Ugric -s.
oppilasjärjestö (Finnish): student association
Definitions
student association
Ancestry of “oppilasjärjestö”, step by step
oppilasjärjestö traces back through two separate lines of ancestry.