Definition of aurora borealis noun from the Oxford Advanced Learner's Dictionary


aurora borealis

BrE BrE//ɔːˌrɔːrə ˌbɔːriˈeɪlɪs//
; NAmE NAmE//ɔːˌrɔːrə ˌbɔːriˈeɪlɪs//
[singular] The Earth and the atmosphere
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= Northern Lights See related entries: The Earth and the atmosphere
See the Oxford Advanced American Dictionary entry: aurora borealis

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