Where does “erotusluku” come from?

erotusluku (Finnish) comes from Finnish erotus, from Finnish erottaa, from Finnish erota, from Finnish ero, from Finnish -o, from Proto-Finnic -o, from Proto-Uralic -w.

erotusluku (Finnish): common difference constant in arithmetic progression

Definitions

  1. common difference constant in arithmetic progression

Ancestry of “erotusluku”, step by step

erotusluku traces back through two separate lines of ancestry.

via Finnish erotus

StepLanguageWordMeaning
1Finnisherotusdifference; difference, relative complement;...
2Finnisherottaato separate; to divide; to fire, dismiss
3Finnisherotato divorce; to differ, be different; to resign
4Finnisherodifference, distinction; Short for avioero;...
5Finnish-oForms result or action nouns from verbs; Forms...
6Proto-Finnic-oForms action/result nouns from verbs
7Proto-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 -wEvery word from Finnish -oEvery word from Proto-Finnic -o