Where does “avartuminen” come from?

avartuminen (Finnish) comes from Finnish avartua, from Finnish avartaa, from Finnish taa, from Finnish taka, from Proto-Finnic taka, from Proto-Uralic taka — a place behind.

Ancestry of “avartuminen”, step by step

StepLanguageWordMeaning
1Finnishavartuato expand, enlarge, widen
2Finnishavartaato expand, enlarge, widen; Third-person singular...
3FinnishtaaOf movement, behind; a shorter form of taakse
4Finnishtakathe backside; In the expression "omasta takaa"...
5Proto-Finnictakaback, a place behind
6Proto-Uralictakaa place behind
Every word from Proto-Uralic takaEvery word from Proto-Finnic takaEvery word from Finnish taka