a star having a diameter of from 10 to 100 times that of the sun, as Arcturus or Aldebaran.
- Also giant.
- Compare supergiant star.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use giant star in a sentence
Based on research models, Nomoto and other astronomers predicted that the best candidates for an electron-capture supernova were red giant stars.Astronomers just confirmed a new type of supernova | Monroe Hammond | June 29, 2021 | Popular-Science
In 1987, a giant star exploded right next to our own Milky Way galaxy.
A food giant star turning the tables on his former industry.What’s in Your Food? Michael Moss Reveals the Food Industry’s Secrets | Michael Moss | March 24, 2013 | THE DAILY BEAST
The clouds thinned, broke apart, and the giant star looked down upon the land with its cold, blue light.Space Prison | Tom Godwin
Its diameter is more than five hundred times that of our own sun and nearly twice that of the giant star Betelgeuze in Orion.Astronomy for Young Folks | Isabel Martin Lewis
Soon the giant star of which it was a planet loomed enormous.Invaders from the Infinite | John Wood Campbell
British Dictionary definitions for giant star
any of a class of stars, such as Capella and Arcturus, that have swelled and brightened considerably as they approach the end of their life, their energy supply having changed: Sometimes shortened to: giant Compare supergiant
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for giant star
A very large, bright non-main-sequence star that burns hydrogen at a much faster rate than a dwarf star. Giant stars are much more luminous and have shorter lifespans than the slower-burning dwarfs. The larger the giant, the shorter its lifespan; the largest stars, with solar mass of around 100, blaze at several hundred thousand times the energy of the Sun and will last only a few million years, a very brief time when compared with the Sun's 10-billion-year lifespan. Giant stars usually end their lives as supernovae , but even before that event the immense ultraviolet radiation they produce has a dramatic impact on their stellar surroundings; the presence of a giant star in a star system prevents the formation of new protostars because the radiation from the giant star breaks apart any nearby nebulae.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.