Supernova Definition
so͝opər-nōvə
supernovae, supernovas
noun
A rare, extremely bright nova that suddenly increases up to a billion times in brightness and reaches an absolute magnitude of c. −16
Webster's New World
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.
American Heritage
Other Word Forms of Supernova
Noun
Singular:
supernova
Plural:
supernovae, supernovasRelated Articles
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