Where does “viisikulmioluku” come from?

viisikulmioluku (Finnish) comes from Finnish viisikulmio, from Finnish -kulmio, from Finnish -io, from Finnish -o, from Proto-Finnic -o, from Proto-Uralic -w.

viisikulmioluku (Finnish): pentagonal number

Definitions

  1. pentagonal number

Ancestry of “viisikulmioluku”, step by step

viisikulmioluku traces back through two separate lines of ancestry.

via Finnish viisikulmio

StepLanguageWordMeaning
1Finnishviisikulmiopentagon
2Finnish-kulmio-gon
3Finnish-ioForms nouns from verbs or verbal stems; Forms...
4Finnish-oForms result or action nouns from verbs; Forms...
5Proto-Finnic-oForms action/result nouns from verbs
6Proto-Uralic-w—

via Finnish luku

StepLanguageWordMeaning
1Finnishlukunumber, count, quantity; chapter; reading
2Proto-Finniclukunumber, quantity
3Proto-Finniclukedakto count; to read ?
4Proto-Uralicluke-to count
5Proto-Indo-Europeanleǵ-to gather, collect, with derivatives meaning to...
Every word from Proto-Uralic -w →Every word from Finnish -o →Every word from Proto-Finnic -o →