Astronomy. supergiant star.
an extremely large or powerful person, company, thing, etc.
extremely large; immense.
any of a class of extremely large and luminous stars, such as Betelgeuse, which have expanded to a large diameter and are eventually likely to explode as supernovae Compare giant star, white dwarf
A star that is larger, brighter, and more massive than a giant star, being thousands of times brighter than the Sun and having a relatively short lifespan—only about 10 to 50 million years as opposed to around 5 billion years for the Sun. Supergiants, such as Betelgeuse and Rigel in Orion, are only found in young cosmic structures such as the arms of spiral galaxies. Red supergiants such as Betelgeuse are late-stage stars, having burned most of their hydrogen in an earlier stage as main-sequence stars, and now fuse helium into heavier elements through the triple alpha process. Blue supergiants such as Rigel are thought to have evolved from red giants, though some are considered main-sequence stars. Supergiants are thought to eventually undergo a supernova, ending up as neutron stars or black holes.
noun 1. a slalom race in which the course is longer and has more widely spaced gates than in a giant slalom.
noun 1. Astronomy. an exceptionally luminous star whose diameter is more than 100 times that of the sun, as Betelgeuse or Antares.
[soo-per-gley-shuh l] /ˌsu pərˈgleɪ ʃəl/ adjective 1. on the surface of a glacier. 2. believed to have been formerly on the surface of a glacier: superglacial debris. superglacial /ˌsuːpəˈɡleɪsɪəl/ adjective 1. on or originating from the surface of a glacier
Trademark. 1. a brand of glue, containing a cyanoacrylate adhesive, that is quick-drying and strong. noun 1. any of various impact adhesives that quickly make an exceptionally strong bond