aurora

nouns

the first light of day
"we got up before dawn"; "they talked until morning"
aurora, break of day, break of the day, cockcrow, dawn, dawning, daybreak, dayspring, first light, morning, sunrise, sunup
is derived from
auroral
is derived from
aurorean
an atmospheric phenomenon consisting of bands of light caused by charged solar particles following the earth's magnetic lines of force
aurora
is derived from
auroral
is a type of (narrower)
a physical phenomenon associated with the atmosphere
atmospheric phenomenon