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supernova

Syllabification: su·per·no·va
Pronunciation: /ˌso͞opərˈnōvə
 
/

Definition of supernova in English:

noun (plural supernovae /-ˌnōvē/ or supernovas)

Astronomy
A star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass.
Example sentences
  • They discover comets, asteroids, quasars, pulsars, supernovae, planets orbiting other stars, and galaxies at the edge of the universe, but none have ever claimed to have discovered a UFO.
  • I read up on interstellar objects and astrophysics and studied quasars, pulsars and supernovas, but my main focus was black holes.
  • An international team of astronomers has identified the surviving companion star to the 1572 supernova explosion witnessed by the Danish astronomer Tycho Brahe.

Definition of supernova in:

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