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1. [informal] A viral disease caused by SARS-CoV-2 that caused a global pandemic in 2020
   - COVID-19, coronavirus disease 2019, 2019-nCoV acute respiratory disease [archaic], novel coronavirus pneumonia, coronavirus [informal], Covid, Covid-19
    
2. The outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse
   - aureole, aureola
    
3. (botany) the trumpet-shaped or cup-shaped outgrowth of the corolla of a daffodil or narcissus flower
    
4. An electrical discharge accompanied by ionization of surrounding atmosphere
   - corona discharge, corposant [archaic], St. Elmo's fire, Saint Elmo's fire, Saint Elmo's light, Saint Ulmo's fire, Saint Ulmo's light, electric glow
    
5. One or more circles of light seen around a luminous object
    
6. (anatomy) any structure that resembles a crown in shape
    
7. A long cigar with blunt ends

Derived forms: coronas, coronae

See also: 2019-nCov [archaic], SARS coronavirus 2, SARS-CoV-2

Type of: anatomical structure, arc, bodily structure, body structure, cigar, complex body part, coronavirus disease, discharge, electric arc, electric discharge, glow, glowing, light, plant part, plant structure, radiance, respiratory disease, respiratory disorder, respiratory illness, spark, structure, visible light, visible radiation

Part of: corolla, nimbus, nimbus cloud, rain cloud

Encyclopedia: Corona, NY