Where does “bartocetaco” come from?

bartocetaco (Esperanto) comes from Esperanto barto, from German barte, from Middle High German barte, from Proto-Germanic bardaz, from Proto-Indo-European bʰardʰéh₂ — beard.

Ancestry of “bartocetaco”, step by step

bartocetaco traces back through two separate lines of ancestry.

via Esperanto barto

StepLanguageWordMeaning
1Esperantobartobaleen
2Germanbartebaleen plates in the mouth of the baleen whale
3Middle High Germanbartehatchet
4Proto-Germanicbardazbeard
5Proto-Indo-Europeanbʰardʰéh₂beard

via Esperanto cetaco

StepLanguageWordMeaning
1Esperantocetaco
Every word from Proto-Indo-European bʰardʰéh₂Every word from Proto-Germanic bardazEvery word from Middle High German barte