Etymology

Australian

Aus·tra·lian
A1U1S1T1R1A1L1I1A1N1

Today it means: A person from the Commonwealth of Australia. Full definition →

English Australia ← Latin terra austrālis incōgnitainflu. ← Proto-Indo-European *h₂élisder.?
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The story

  1. Proto-Indo-European*h₂ews-
  2. Proto-Indo-European*h₂éwss?
  3. Proto-Indo-European*h₂éwsteros
  4. Proto-Italic*austeros
  5. Latinauster
  6. Proto-Indo-European*h₂el-
  7. Proto-Indo-European*h₂élisder.?
  8. Latinaustrālis
  9. Latinterra austrālis incōgnitainflu.
  10. EnglishAustralia
  11. English todayAustralian

From Australia + -an (suffix forming adjectives).

Etymology from Wiktionary, CC BY-SA 4.0.