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white supergiant

American  

noun

plural

white supergiants

  1. Astronomy. a supergiant star with a surface temperature of around 7,000-10,000 K.

white supergiant Scientific  

  1. A rare type of extremely bright supergiant with surface temperature of around 10,000°K. Deneb, one of the brightest stars in the Milky Way, is a white supergiant; it has luminosity approximately 60,000 times that of the Sun.

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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.