C2 noun #102,596 most common

Aurora

UK /ɔːˈɹɔː.ɹə/ | US /ɔːˈɹɔː.ɹə/

An atmospheric phenomenon created by charged particles from the sun striking the upper atmosphere, creating coloured lights in the sky. It is usually named australis or borealis based on whether it is in the Southern or Northern Hemisphere respectively.

Aurora in 30 Seconds

  • (noun) An atmospheric phenomenon created by charged particles from the sun striking the upper atmosphere, creating coloured lights in the sky. It is usually named australis or borealis based on whether it is in the Southern or Northern Hemisphere respectively.

Meanings

  1. 1
    noun An atmospheric phenomenon created by charged particles from the sun striking the upper atmosphere, creating coloured lights in the sky. It is usually named australis or borealis based on whether it is in the Southern or Northern Hemisphere respectively.

Synonyms

chasma polar light
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