Where does “kasaantuminen” come from?

kasaantuminen (Finnish) comes from Finnish kasaantua, from Finnish kasata, from Italian cassata, from Italian cassare, from Latin cassō, from Latin cassus, from Latin cadō, from Proto-Italic kadō — to fall.

Ancestry of “kasaantuminen”, step by step

StepLanguageWordMeaning
1FinnishkasaantuaAlternative form of kasautua
2Finnishkasatato pile, heap, stack; to accumulate, amass, pile...
3Italiancassatacassata; feminine singular of cassato
4Italiancassareto delete; to cross out; to extinguish; to stamp...
5Latincassōto nought, to annul, to nullify, to cassate
6Latincassushollow, empty, devoid of something; lacking;...
7Latincadōto fall, to fall out
8Proto-Italickadōfall, sink
9Proto-Indo-Europeanḱad-to fall
Every word from Proto-Indo-European ḱad-Every word from Proto-Italic kadōEvery word from Latin cadō