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auroral (adj) connected with aurora, the bands of very bright light seen near the poles.
Auroral is connected with aurora, an atmospheric phenomenon of bands of usually green, red, or yellow light moving across the sky in the polar regions. If it is in the south polar region, it is called the aurora australis, and if it is in the north polar region, it is called aurora borealis.
- The auroral grandeur of aurora borealis struck the members of the expedition as a spectacular display of nature's artistry, which in the desolate region, could not be viewed by more than a few.
- The auroral spectacle of the aurora australis will be remembered lifelong by the people who visited the south pole.