Where does “kulmaikkuna” come from?

kulmaikkuna (Finnish) comes from Finnish ikkuna, from Finnish akkuna, from Proto-Finnic *akkuna, from Old East Slavic окъно, from Proto-Slavic okъnò — window.

kulmaikkuna (Finnish): corner window

Definitions

  1. corner window

Ancestry of “kulmaikkuna”, step by step

kulmaikkuna traces back through two separate lines of ancestry.

via Finnish ikkuna

StepLanguageWordMeaning
1Finnishikkunawindow; sash
2FinnishakkunaAlternative form of ikkuna
3Proto-Finnic*akkunawindow
4Old East Slavicокъноwindow
5Proto-Slavicokъnòwindow

via Finnish kuľma

StepLanguageWordMeaning
1Finnishkuľmacorner external point where two converging lines meet
Every word from Proto-Slavic okъnòEvery word from Old East Slavic окъноEvery word from Proto-Finnic *akkuna