Where does “Australiô” come from?

Australiô (Kashubian) comes from Polish Australia, from English Australia, from Latin terra austrālis incōgnita, from Latin auster, from Proto-Italic *austeros.

Ancestry of “Australiô”, step by step

StepLanguageWordMeaning
1PolishAustraliaAfrica
2EnglishAustralia
3Latinterra austrālis incōgnita
4LatinausterThe south wind; south
5Proto-Italic*austeros
Every word from Proto-Italic *austeros