Where does “шестосједалница” come from?

шестосједалница (Serbo-Croatian) comes from Serbo-Croatian ше̑ст, from Proto-Slavic šestь, from Proto-Balto-Slavic šéš, from Proto-Indo-European swéḱs — six.

Definitions

Ancestry of “шестосједалница”, step by step

шестосједалница traces back through two separate lines of ancestry.

via Serbo-Croatian ше̑ст

StepLanguageWordMeaning
1Serbo-Croatianше̑стsix
2Proto-Slavicšestьsix
3Proto-Balto-Slavicšéšsix
4Proto-Indo-Europeanswéḱssix

via Serbo-Croatian сједалница

StepLanguageWordMeaning
1Serbo-Croatianсједалница—
Every word from Proto-Indo-European swéḱs →Every word from Proto-Balto-Slavic šéš →Every word from Proto-Slavic šestь →