Main definitions of aurora in English

: Aurora1Aurora2

Aurora1

proper noun

  • 1A city in north central Colorado, east of Denver; population 319,057 (est. 2008)

  • 2An industrial city in northeastern Illinois; population 171,782 (est. 2008)

Pronunciation:

Aurora

/əˈrôrə/

Main definitions of aurora in English

: Aurora1Aurora2

Aurora2

proper noun

Roman Mythology
  • Goddess of the dawn.

    Greek equivalent Eos

Pronunciation:

Aurora

/əˈrôrə/

Main definitions of aurora in English

: Aurora1Aurora2

aurora

noun

  • 1A natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky, usually near the northern or southern magnetic pole.

    • ‘Although the solar wind produces beautiful auroras, it can also cause a variety of undesirable consequences.’
    • ‘Colorful sky lights called auroras may be active at high latitudes and possibly into northern U.S. states and Europe.’
    • ‘A typical example of how both missions will co-operate is the study of the magnetic substorms producing the bright aurorae.’
    • ‘Experts used to think it was just a matter of the air being heated by particles and electric currents in the regions around the poles, where auroras occur.’
    • ‘As it is, auroras on Earth follow magnetic lines of force that converge at the north and south magnetic poles.’
    • ‘And then last week another big storm that caused auroras and beautiful geo magnetic activity all over the world.’
    • ‘Bound to the Earth, our only naturally occurring experience with space weather comes from what we can see with our eyes: eclipses, comets, auroras, and sunspots.’
    • ‘This causes the phenomenon called the northern lights, also known as the aurora borealis.’
    • ‘Birkeland's experiments failed to account for one of the most important traits of auroras: they are common around the polar regions but exceedingly rare at the poles themselves.’
    • ‘The Hubble Space Telescope has spotted auroras near the poles of both Saturn and Jupiter.’
    • ‘The eventual physical effects of the storm were minimal - auroras were visible in Boston and other northern U.S. cities, but no satellites or power grids had major failures.’
    • ‘In the southern hemisphere, sky watchers saw the aurora australis over New Zealand, Australia, and South Africa.’
    • ‘Gaps in the magnetosphere also allow for one of Earth's most beautiful, eerie phenomena: the aurora borealis, or northern lights.’
    • ‘He expanded on their work by pulling in historical records of auroras, naked-eye sunspots, and eclipses.’
  • 2literary [in singular] The dawn.

    daybreak, break of day, crack of dawn, sunrise, first light, daylight, first thing in the morning, early morning, cockcrow
    View synonyms

Origin

Late Middle English ( aurora): from Latin, dawn, goddess of the dawn Sense 1 dates from the early 18th century.

Pronunciation:

aurora

/əˈrôrə/