Where does “oksaisa” come from?

oksaisa (Finnish) comes from Finnish oksa, from Proto-Finno-Ugric *oksa, from Proto-Finno-Permic oksa.

Ancestry of “oksaisa”, step by step

StepLanguageWordMeaning
1Finnishoksabranch; bough; knot
2Proto-Finno-Ugric*oksa—
3Proto-Finno-Permicoksa—
Every word from Proto-Finno-Permic oksa →Every word from Proto-Finno-Ugric *oksa →Every word from Finnish oksa →
oksaisa — Etymology, Origin & Word History | Etymology Explorer