Etymology

auroral

au·ror·al
A1U1R1O1R1A1L1

Today it means: Pertaining to the dawn; dawning, eastern, like a new beginning. Full definition →

Proto-Indo-European *h₂élisder.? ← English aurora
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The story

  1. Englishaurora
  2. Proto-Indo-European*h₂el-
  3. Proto-Indo-European*h₂élisder.?
  4. English todayauroral

From aurora + -al.

Etymology from Wiktionary, CC BY-SA 4.0.