supernova

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noun su·per·no·va \ˌsü-pər-ˈnō-və\

Definition of supernova

  1. 1 :  the explosion of a star in which the star may reach a maximum intrinsic luminosity one billion times that of the sun

  2. 2 :  one that explodes into prominence or popularity; also :  superstar

Examples of supernova in a Sentence

  1. tragically, a shoulder injury cut short the pitching career of one of baseball's brightest supernovas

Recent Examples of supernova from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'supernova.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Did You Know?

A nova, despite its name, isn't actually a "new" star, but rather one that wasn't noticed until it exploded, when it may increase in brightness by a million times before returning to its previous state a few days later. A supernova is far larger; a star in its supernova state may emit a billion times as much light as previously. After a few weeks it begins to dim, until it eventually ceases to exist; it's often replaced by a black hole. (Though remains that were shot out into space may survive; those of a great supernova seen in A.D. 1054 are now known as the Crab Nebula.) All this may serve as a warning to those human stars whose fame explodes too rapidly; supernovas of this kind have sometimes vanished by the following year.

Origin and Etymology of supernova

New Latin


SUPERNOVA Defined for English Language Learners

supernova

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noun

Definition of supernova for English Language Learners

  • astronomy : the explosion of a star that causes the star to become extremely bright



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