Where does “terra australis incognita” come from?

terra australis incognita (Latin) comes from Latin auster, from Proto-Italic *austeros.

Ancestry of “terra australis incognita”, step by step

StepLanguageWordMeaning
1LatinausterThe south wind; south
2Proto-Italic*austeros

Words derived from “terra australis incognita

Every word from Proto-Italic *austeros