aurora

aurora — noun

1. bands of glowing colour — usually green, pink, or violet — that ripple across th

1.nounC1
Definition

bands of glowing colour — usually green, pink, or violet — that ripple across the night sky in regions close to the North or South Pole, produced when particles from the Sun strike gases high in the atmosphere.

Example

From the cabin window, Sara watched a green aurora ripple above the Norwegian mountains.

countable: 'a green aurora'

The aurora glowed in pink and violet streaks all the way to the horizon.

'the aurora' as a single visible event

Common collocations
  • see the aurora
  • watch the aurora
  • photograph the aurora
  • a green / pink / violet aurora
  • aurora borealis
  • aurora australis
Synonyms
  • northern lights

    everyday English term for the northern version (aurora borealis); more familiar to general readers

  • southern lights

    everyday English term for the southern version (aurora australis)

  • polar lights

    umbrella term covering both hemispheres; less common in casual speech

Grammar Patterns

the aurora

an aurora

Usage Note

Often used with the definite article when describing a specific viewing event ('we saw the aurora last night'). The full Latin names — aurora borealis (north) and aurora australis (south) — are common in scientific writing; in everyday English people simply say 'the aurora' or 'the northern lights'.

Common Mistakes

I saw the aurora in my hotel room.
I saw the aurora from my hotel window.
auroras appear in the outdoor sky, so use 'from' or 'above', not 'in [an indoor space]'.
The aurora is a kind of cloud.
The aurora is a kind of glowing light in the sky.
auroras are made of light, not water vapour.

Word family

  • auroral
    adjectiveC2
  • aurorae
    nounC2

Synonym discussion

Sense: noun/1

All three terms refer to the same natural light show, but they sit at different points on the formal-to-casual scale. 'Northern lights' is the everyday term most travellers and journalists reach for, especially when describing a personal viewing experience: 'we drove three hours to see the northern lights.' 'Aurora' is slightly more formal and slightly more scientific, but still common in news headlines and travel writing — and unlike 'northern lights' it works for displays in either hemisphere. 'Aurora borealis' is the full Latin name for the northern version and signals a scientific or formal register; you would meet it in a physics textbook or a National Geographic article rather than in casual chat. Compare: 'The kids saw the northern lights' (casual), 'Iceland's auroras drew record crowds' (news), 'Aurora borealis is generated by solar wind' (technical).

aurora ↗northern lightsaurora borealis

Common collocations

Nouns

  • aurora season
  • aurora forecast
  • aurora hunter
  • aurora display

Adverbs

  • faintly visible
  • brightly glowing

Phrases

  • chase the aurora
  • under the aurora
  • a curtain of aurora

Prepositions

  • above the horizon
  • across the sky
  • over the mountains

Etymology

LatinMiddle EnglishEnglish

Borrowed into English in the late 1300s from Latin, where 'Aurora' was the name of the Roman goddess of the dawn — sister to the sun and the moon. From the early sense of 'dawn' or 'morning glow', scientists in the 1600s extended the word to the coloured glow that lights up polar skies, and the astronomer Galileo is often credited with coining 'aurora borealis' (literally 'northern dawn') around 1619. The everyday meaning of a personal name in English comes directly from the goddess.