Where does “irtoselkä” come from?

irtoselkä (Finnish) comes from Finnish selkä, from Proto-Finnic selkä, from Proto-Finno-Permic śelkä.

irtoselkä (Finnish): hollow back of a book

Definitions

  1. hollow back of a book

Ancestry of “irtoselkä”, step by step

StepLanguageWordMeaning
1Finnishselkäback; ridge, spine; watershed area
2Proto-Finnicselkäback; ridge
3Proto-Finno-Permicśelkä—
Every word from Proto-Finno-Permic śelkä →Every word from Proto-Finnic selkä →Every word from Finnish selkä →