Astron.
a binary star having components that are not sufficiently separated to be resolved by a telescope, known to be a binary only bythe variations in wavelength of emitted light that are detected by a spectroscope. Cf. visual binary .
Astron.
a binary star having components that are not sufficiently separated to be resolved by a telescope, known to be a binary only bythe variations in wavelength of emitted light that are detected by a spectroscope. Cf. visual binary .
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012