Definition of variable star in English:

variable star


  • A star whose brightness changes, either irregularly or regularly.

    • ‘He discovered the mass-luminosity relationship for stars, he calculated the abundance of hydrogen, and he produced a theory to explain the pulsation of Cepheid variable stars.’
    • ‘The study of variable stars, or just variables, as they are known - is extremely important for understanding the stellar life-cycle.’
    • ‘Cepheid variable stars tend to be extra bright.’
    • ‘They'll also be searching for storms on Mars and Jupiter, monitoring active galactic nuclei, and measuring variable stars.’
    • ‘This type of system is called an eclipsing binary, or an eclipsing variable star.’


variable star

/ˈverēəbəl stär/