supergiant(redirected from Supergiants)
Also found in: Thesaurus, Encyclopedia.
Any of various very massive, large, and bright stars, such as Betelgeuse or Rigel, having a luminosity that is thousands of times greater than that of the sun. When a supergiant collapses into a supernova, it may result in either a neutron star or a black hole.
su•per•gi•ant(ˈsu pərˌdʒaɪ ənt)
a very bright, very large star, hundreds of times larger than the sun.
A star that is larger, brighter, and more massive than a giant star. Supergiants, such as Betelgeuse or Rigel, are thousands of times brighter than the sun. See more at star.