Where does “selkämuna” come from?

selkämuna (Ingrian) comes from Ingrian muna, from Proto-Finnic muna, from Proto-Uralic müŋä — rear, beyond; space behind something.

Ancestry of “selkämuna”, step by step

selkämuna traces back through two separate lines of ancestry.

via Ingrian muna

StepLanguageWordMeaning
1Ingrianmunaegg
2Proto-Finnicmunaegg
3Proto-Uralicmüŋärear, beyond; space behind something

via Ingrian selkä

StepLanguageWordMeaning
1Ingrianselkäback
2Proto-Finnicselkäback; ridge
3Proto-Finno-Permicśelkä—
Every word from Proto-Uralic müŋä →Every word from Proto-Finnic muna →Every word from Ingrian muna →