auroral

[aw-rawr-uh l, aw-rohr-, uh-rawr-, uh-rohr-]

adjective

Origin of auroral

First recorded in 1545–55; auror(a) + -al¹

Related formsau·ro·ral·ly, adverb

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Nevertheless, Maunder says that this thing had no relation to auroral phenomena.
The Book of the Damned
Charles Fort
Color said to have been the same as that of the auroral glow in the north.
The Book of the Damned
Charles Fort
You are all colour of dawn, auroral, colour of tender fires.
Little Novels of Italy
Maurice Henry Hewlett
The Burneys, however, can do no more for us than shed that auroral dew.
The London Mercury, Vol. I, Nos. 1-6, November 1919 to April 1920
Various
But hark the herald of the sun, the auroral wind, softly trumpeting his approach!
Lilith
George MacDonald

1550s, "pertaining to dawn," from aurora + -al (1). Meaning "of the color of dawn" is from 1827; "of the aurora" from 1828.