Definition of corona noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈrəʊ//
; NAmE NAmE//ˈroʊ//
(pl. coronae
BrE BrE//kəˈrəʊniː//
; NAmE NAmE//kəˈroʊniː//
(astronomy) (informal halo) The sun and the moon
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a ring of light seen around the sun or moon, especially during an eclipse See related entries: The sun and the moon Word Originmid 16th cent. : from Latin, ‘wreath, crown’.
See the Oxford Advanced American Dictionary entry: corona