The definition of a supernova is a rare star that explodes and suddenly becomes much brighter.
A star in the sky that suddenly becomes extremely bright due to an explosion is an example of a supernova.
nounpl. -·vas or -·vae
a rare, extremely bright nova that suddenly increases up to a billion times in brightness and reaches an absolute magnitude of c. ?16
Origin of supernovaModL: see super- and nova
nounpl. su·per·no·vae, or su·per·no·vas
A rare celestial phenomenon involving the explosion of a star and resulting in an extremely bright, short-lived object that emits vast amounts of energy. Depending on the type of supernova, the explosion may completely destroy the star, or the stellar core may survive to become a neutron star.
(plural supernovas or supernovae)
- dwarf nova
- red nova