(astronomy) A member of a class of supernovae that display prominent lines of hydrogen in their spectra and have irregular light curves; they are believed be explosions of young massive stars, still in possession of their hydrogenic surface layers.
type II supernova
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(′tīp ¦tü ¦sü·pər′nō·və)
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 | Antares (stars, the galaxy) |
| Supernova |
| Universe (astronomy) |
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