Where does “rustolevy” come from?

rustolevy (Finnish) comes from Finnish levy, from Finnish -u, from Proto-Finnic -u — Forms nouns from adjectives, nouns.

rustolevy (Finnish): cartilage disc

Definitions

  1. cartilage disc

Ancestry of “rustolevy”, step by step

rustolevy traces back through two separate lines of ancestry.

via Finnish levy

StepLanguageWordMeaning
1Finnishlevyplate; board; slab
2Finnish-uForms nouns from verbs. Most common with "e"- and...
3Proto-Finnic-uForms nouns from adjectives, nouns

via Finnish rusto

StepLanguageWordMeaning
1Finnishrustocartilage; gristle
Every word from Proto-Finnic -u →Every word from Finnish -u →Every word from Finnish levy →