Illustration of corona
- a corona 2c
plural coronas
1
: the projecting part of a classic cornice
2
: something suggesting a crown: such as
a
plural coronae
kə-ˈrō-(ˌ)nē
also coronas
(1)
: a usually colored circle often seen around and close to a luminous body (such as the sun or moon) caused by diffraction produced by suspended droplets or occasionally particles of dust
(2)
: the tenuous outermost part of the atmosphere of a star (such as the sun)
(3)
: a circle of light made by the apparent convergence of the streamers of the aurora borealis
b
: the upper portion of a bodily part (such as a tooth or the skull)
c
: an appendage or series of united appendages on the inner side of the corolla in some flowers (such as the daffodil, jonquil, or milkweed)
d
: a faint glow adjacent to the surface of an electrical conductor at high voltage
e
informal
: coronavirus
In the fight against the consequences of the corona epidemic, the Italian government is resorting to radical measures.—Anne Kunz et al.
3
[from La Corona, a trademark]
: a long cigar having the sides straight to the end to be lit and being roundly blunt at the other end
Cite this Entry
“Corona.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/corona. Accessed 8 Aug. 2026.
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