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Webster 1913 Edition

Adj.

Belonging to, or resembling, the aurora (the dawn or the northern lights); rosy.

Her cheeks suffused with an

auroral

blush.

Longfellow.

Adj.

Belonging to the aurora, or to the northern lights; resembling the twilight.

auroral ‎(comparative more auroral, superlative most auroral)

Pertaining to the dawn; dawning, eastern, like a new beginning.
- 1902, William James, The Varieties of Religious Experience, Folio Society 2008, p. 227:
  This auroral openness and uplift gives to all creative ideal levels a bright and carolling quality, which is nowhere more marked than where the controlling emotion is religious.
Rosy in colour, blushing, roseate.
Pertaining to the aurora borealis.