Where does “kirjeensuljinmerkki” come from?

kirjeensuljinmerkki (Finnish) comes from Finnish merkki, from Old Swedish mærki, from Old Norse merki, from Proto-Germanic markō, from Proto-Indo-European morǵ- — edge, boundary, border; frontier, border.

Ancestry of “kirjeensuljinmerkki”, step by step

kirjeensuljinmerkki traces back through 3 separate lines of ancestry.

via Finnish merkki

StepLanguageWordMeaning
1Finnishmerkkimark, sign; character; symbol
2Old Swedishmærki—
3Old Norsemerkiboundary
4Proto-Germanicmarkōborder, boundary; region, area
5Proto-Indo-Europeanmorǵ-edge, boundary, border; frontier, border

via Finnish suljin

StepLanguageWordMeaning
1Finnishsuljinshutter; First-person singular indicative past...
2Finnish-inSuffix variant for the illative singular, see...
3Proto-Finno-Ugric*-in—
4Proto-Uralic-ma—

via Finnish kirje

StepLanguageWordMeaning
1Finnishkirjeletter
2Finnishkirjabook; quire
3Proto-Finnickirjadecoration, carving, pattern
Every word from Proto-Indo-European morǵ- →Every word from Proto-Germanic markō →Every word from Old Norse merki →