corona Meaning and Definition
1. n. a long cigar with blunt ends
2. n. (anatomy) any structure that resembles a crown in shape
3. n. the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse
4. n. one or more circles of light seen around a luminous object
5. n. an electrical discharge accompanied by ionization of surrounding atmosphere
6. n. (botany) the trumpet-shaped or cup-shaped outgrowth of the corolla of a daffodil or narcissus flower
A corona (Latin, 'crown') is an aura of plasma that surrounds the sun and other stars. The Sun's corona extends millions of kilometres into space and is most easily seen during a total solar eclipse, but it is also observable with a coronagraph.
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