corona
noun /kəˈrəʊnə/
/kəˈrəʊnə/
(plural coronae
(astronomy) /kəˈrəʊniː/
/kəˈrəʊniː/
)(also informal halo)
- a ring of light seen around the sun or moon, especially during an eclipseTopics Spacec2Word Originmid 16th cent. : from Latin, ‘wreath, crown’.