Where does “tunnuslevy” come from?

tunnuslevy (Finnish) comes from Finnish tunnus, from Finnish tuntea, from Proto-Finnic tuntedak, from Proto-Uralic tumte- — to know.

Ancestry of “tunnuslevy”, step by step

tunnuslevy traces back through two separate lines of ancestry.

via Finnish tunnus

StepLanguageWordMeaning
1Finnishtunnusmarking; insignia, emblem, seal, banner; sign,...
2Finnishtunteato feel, sense; to know, be familiar with
3Proto-Finnictuntedakto know; to feel
4Proto-Uralictumte-to know

via Finnish levy

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