Where does “keskimääräisesti” come from?

keskimääräisesti (Finnish) comes from Finnish keskimääräinen, from Finnish määräinen, from Finnish määrä, from Old East Slavic мѣра, from Proto-Slavic měra, from Proto-Balto-Slavic mḗˀrāˀ, from Proto-Indo-European meh₁-reh₂, from Proto-Indo-European meh₁- — to measure.

Ancestry of “keskimääräisesti”, step by step

StepLanguageWordMeaning
1Finnishkeskimääräinenaverage; mediocre
2Finnishmääräinendefinite; As headword in a compound term...
3Finnishmääräamount, quantity; count, number; aim, target,...
4Old East Slavicмѣра
5Proto-Slavicměrameasure
6Proto-Balto-Slavicmḗˀrāˀ
7Proto-Indo-Europeanmeh₁-reh₂
8Proto-Indo-Europeanmeh₁-to measure
Every word from Proto-Indo-European meh₁-Every word from Proto-Indo-European meh₁-reh₂Every word from Proto-Balto-Slavic mḗˀrāˀ