Where does “chao” come from?

chao (Galician) comes from Italian ciao, from Venetian ciao, from Venetian s-ciao, from Medieval Latin sclavus, from Ancient Greek Σκλάβος, from Ancient Greek Σκλαβηνός, from Proto-Slavic slověninъ, from Proto-Slavic slovo — to cover; to incline.

chao (Galician): plain, plateau; ground. Alternative form of chan;...

Definitions

  1. plain, plateau; ground. Alternative form of chan;...

Ancestry of “chao”, step by step

chao traces back through two separate lines of ancestry.

via Italian ciao

StepLanguageWordMeaning
1Italianciaohello!; goodbye!
2Venetianciaohello, goodbye, your servant; hullo, goodbye;...
3Venetians-ciaoservant, slave; slave
4Medieval LatinsclavusSlav, slave; slave
5Ancient GreekΣκλάβοςSlav
6Ancient GreekΣκλαβηνόςSlavic
7Proto-SlavicslověninъSlav
8Proto-Slavicslovoword
9Proto-Balto-Slavicślawas
10Proto-Indo-Europeanḱléwosfame
11Proto-Indo-Europeanḱlew-to hear
12Proto-Indo-Europeanḱel-to cover; to incline

via Old Portuguese chão

StepLanguageWordMeaning
1Old Portuguesechãoground, floor; flatland, plain; flat, smooth
2Latinplānuslevel, flat, even
3Ancient Greekπλάνοςwandering
4Ancient Greekπλανάωto make to wander, lead wandering about; to lead...
5Proto-Indo-Europeanpl-néh₂-ti

Words derived from “chao

Every word from Proto-Indo-European ḱel-Every word from Proto-Indo-European ḱlew-Every word from Proto-Indo-European ḱléwos