Definition of coronae:
(n) :
(astronomy) The luminous plasma atmosphere of the Sun (the solar corona) or other star, extending millions of kilometres into space, most easily seen during a total solar eclipse.
(n) :
(informal, also attributively) A coronavirus, especially SARS-CoV-2.
(n) :
(informal, also attributively) A disease caused by a coronavirus, especially COVID-19.
(n) :
(virology) A fringe of large, bulbous surface projections on coronaviruses, formed by viral spike peplomers, creating an appearance reminiscent of the solar corona.
(n) :
(anatomy) An upper or crownlike portion of certain parts of the body.
(n) :
The external (supragingival) portion of the tooth, covered by enamel; the crown.