ə ro rə
- noun
1. in Roman mythology, the goddess of dawn.
2. (l.c.) the dawn or beginning of something.
The treaty brought about the aurora of peace.
3. (l.c.) bands or streamers of light that appear in the sky at night in areas around the magnetic poles, caused by solar particles striking atoms in the outer part of the earth’s atmosphere. (see aurora australis, aurora borealis.)
While camping in the north one summer, we experienced the beautiful sight of an aurora in the night sky.