type I supernova
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Related to type I supernova: Type II supernova
type I supernova[′tīp ¦wən ¦sü·pər′nō·və]
A member of a class of supernovae that lack hydrogen in their spectra and have relatively regular light curves.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.