Where does “kaksipuoleinen” come from?

kaksipuoleinen (Finnish) comes from Finnish puoleinen, from Finnish puoli, from Proto-Finnic pooli, from Proto-Uralic pälä — half.

Ancestry of “kaksipuoleinen”, step by step

kaksipuoleinen traces back through two separate lines of ancestry.

via Finnish puoleinen

StepLanguageWordMeaning
1Finnishpuoleinenbeing on the side of something; related through...
2Finnishpuolihalf; when followed by a number representing an...
3Proto-Finnicpoolihalf, side; half
4Proto-Uralicpälähalf

via Finnish kaksi

StepLanguageWordMeaning
1Finnishkaksitwo
2Proto-Finnickakcitwo
3Proto-Uralic*kakta
Every word from Proto-Uralic päläEvery word from Proto-Finnic pooliEvery word from Finnish puoli