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helium flash
he·li·um flash (plural he·li·um flash·es)


noun 
Definition:
 
beginning of helium burning in star: the sudden onset of fusion reactions using helium as fuel in a star that has no hydrogen left to burn, resulting in expansion of the star's core
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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