Where does “Ōserēria” come from?

Ōserēria (Penrhyn) comes from English Australia, from Latin terra austrālis incōgnita, from Latin auster, from Proto-Italic *austeros.

Ancestry of “Ōserēria”, step by step

StepLanguageWordMeaning
1EnglishAustralia—
2Latinterra austrālis incōgnita—
3LatinausterThe south wind; south
4Proto-Italic*austeros—
Every word from Proto-Italic *austeros →Every word from Latin auster →Every word from Latin terra austrālis incōgnita →