1. (n.)corona a white or coloredcircle or set of concentric circles of light seen around a luminous body, esp. around the sun or moon.
2. corona a similar coloredcircle or set of circles visible in the atmosphere and attributable to the diffraction caused by thin clouds, mist, or sometimes dust
3. corona a diffuse, hot envelope of ionized gas surrounding the sun that is visible during total solar eclipse.
4. corona a long, straight, untapered cigar, rounded at the closed end.
5. corona a crownlike appendage on a plant, esp. on the inner side of a corolla, as in the narcissus.
6. corona the upper portion or crown of a part, as of the head.
7. corona the projecting slablike member of a classical cornice, supported by the bed molding or by modillions, dentils, etc., and surmounted by the cymatium.
8. corona a metal chandelier having the form of one or more concentric hoops, used esp. in churches.
9. (n.)Corona a city in SE California. 100,208.
Definition of 'corona'
Princeton's WordNet
1. (noun)aureole, corona the outermost region of the sun's atmosphere; visible as a whitehalo during a solar eclipse
3. (noun)corona discharge, corona, corposant, St. Elmo's fire, Saint Elmo's fire, Saint Elmo's light, Saint Ulmo's fire, Saint Ulmo's light, electric glow an electrical discharge accompanied by ionization of surrounding atmosphere
4. (noun)corona one or more circles of light seen around a luminous object
5. (noun)corona a peculiar luminous appearance, or aureola, which surrounds the sun, and which is seen only when the sun is totally eclipsed by the moon
10. (noun)corona a crown or circlet suspended from the roof or vaulting of churches, to hold tapers lighted on solemn occasions. It is sometimes formed of double or triple circlets, arranged pyramidically. Called also corona lucis
Definitions of corona 
