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English definition of “supernova”

supernova

noun [C]     /ˌsuː.pəˈnəʊ.və/ US  /-pɚˈnoʊ-/ (plural supernovae   /-viː/   or supernovas)
a star that has exploded, strongly increasing its brightness for a few monthsStars and constellations
(Definition of supernova noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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