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hypergiant

hypergiant

1 9.6
A very large, very bright star much larger than a supergiant
  • noun
  • /ˈhaɪpərˌdʒaɪənt/
  • Specialized
translation icon : hipergigante
  • The line's shape provides us with a precise indicator for gas movements in the extended hypergiant atmosphere, where it forms.
  • a yellow hypergiant
  • hypergiant stars

Examples

  • One out of a million stars in our galaxy is a normal supergiant star, yet fewer are hypergiants.

    Academic text (2004)
  • The hypergiant has an average radius of 400 to 500 times that of the Sun, so large that if placed at the Sun's position, it would...

    Academic text (2004)
  • PHOTO (COLOR): One of a rare breed of stars called hypergiants, Rho Cassiopeiae is a promising target for any observer.

    Academic text (2004)
  • HR 8752, for example, is a cool hypergiant that increased its surface temperature by 3,000 kelvins over the past thirty years, while the temperature of star IRC+10420 increased at least 2,000 kelvins over the last two decades.

    Academic text (2004)
  • The brilliant red hypergiant, VY Canis Majoris, is one of the largest known stars in our galaxy.

  • Astronomers study hypergiants to understand the life cycle of massive stars.

  • Compared to regular stars, hypergiants are astonishingly bright and can be seen from great distances.

How Big

hypergiant
  • Specialized
1 9.6
supergiant
  • Specialized
3 8.5
giant
  • Specialized
27 8.8

Surface Forms

hypergiant singular
hypergiants plural

Morphology

hypergiant = giant (semi-transparent) = hyper + giant

The word is compositional as 'hyper-' plus 'giant', but the astronomical sense is a specialized extension rather than a fully everyday meaning.

Etymology

Hypergiant combines the Greek prefix hyper- meaning 'over' or 'too much' with the common word giant meaning 'very big', so a hypergiant is a star that is 'beyond giant' — much bigger and much brighter than an ordinary giant star.