corona meaning and definition

CORONA noun

Definition of corona (noun)

1. the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse
   • synonyms: aureole
2. (botany) the trumpet-shaped or cup-shaped outgrowth of the corolla of a daffodil or narcissus flower
3. an electrical discharge accompanied by ionization of surrounding atmosphere
   • synonyms: corona discharge, corposant, electric glow, Saint Elmo's fire, Saint Elmo's light, Saint Ulmo's fire, Saint Ulmo's light, St. Elmo's fire
4. one or more circles of light seen around a luminous object
5. (anatomy) any structure that resembles a crown in shape
6. a long cigar with blunt ends