Where does “lattiaanlyönti” come from?

lattiaanlyönti (Finnish) comes from Finnish lyönti, from Finnish -nti, from Finnish -nta, from Proto-Finnic -nta — Forms action nouns from verbs.

Ancestry of “lattiaanlyönti”, step by step

lattiaanlyönti traces back through two separate lines of ancestry.

via Finnish lyönti

StepLanguageWordMeaning
1FinnishlyöntiA hit
2Finnish-ntiForm action nouns from verbs whose first...
3Finnish-ntaForms nouns that describe an action; "erota...
4Proto-Finnic-ntaForms action nouns from verbs

via Finnish lattia

StepLanguageWordMeaning
1Finnishlattiafloor
2Proto-Germanicflatjąa level surface; level ground; the floor of a...
3Proto-Germanicflatazflat
4Proto-Indo-EuropeanplÁt-
Every word from Proto-Finnic -ntaEvery word from Finnish -ntiEvery word from Finnish lyönti