Where does “siilautua” come from?

siilautua (Finnish) comes from Finnish siilata, from Finnish siili, from Estonian siil, from Proto-Finnic siili, from Proto-Finno-Ugric śijele — hedgehog.

Ancestry of “siilautua”, step by step

StepLanguageWordMeaning
1Finnishsiilatato strain, to filtrate
2Finnishsiilihedgehog; hedgehog, European hedgehog, common...
3Estoniansiilhedgehog
4Proto-Finnicsiilihedgehog
5Proto-Finno-Ugricśijelehedgehog
Every word from Proto-Finno-Ugric śijele →Every word from Proto-Finnic siili →Every word from Estonian siil →