"gamma-ray burst." YourDictionary, n.d. Web. 11 October 2018. <http://www.yourdictionary.com/gamma-ray-burst>.
gamma-ray burst. (n.d.). Retrieved October 11th, 2018, from http://www.yourdictionary.com/gamma-ray-burst
(plural gamma-ray bursts) (Abbreviated as: GRB)
(astronomy) A flash of gamma rays that seem to originate from a random point in the sky; their most likely sources are believed to be supernova explosions of a very massive stars and mergers of neutron stars.
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