(ô·rôr′ə, ô·rō′rə) noun
1. The dawn.
2. The early stage or development of anything.
3. Meteorol. A luminous, sometimes richly colored display of arcs, bands, streamers, etc., occasionally seen in the skies of high northern and southern latitudes: it is caused by electrical disturbances in the atmosphere: also au·ro′ra po·la·ris (pə·lâr′is). [<L, dawn]

(ô·rôr′ə, ô·rō′rə)
In Roman mythology, the goddess of the dawn: identified with the Greek Eos.