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supergiant
su·per·gi·ant [ spər j ənt ] (plural su·per·gi·ants)


noun 
Definition:
 
extremely large bright star: an extremely large brilliant star with a luminosity thousands of times greater than that of the Sun. The stars Rigel and Betelgeuse are supergiants.
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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