Definition of binary star in English:

binary star

Syllabification: bi·na·ry star

noun

A system of two stars in which one star revolves around the other or both revolve around a common center.
More example sentences
  • Neutron stars in binary star systems, however, can reverse this trend and speed up with the help from the companion star.
  • In a binary star system where one star is normal and the other is a black hole, ‘matter will flow off the star onto the black hole,’ Morgan said.
  • Near the geographic center of the galaxy was a binary star system called Theralia.

Definition of binary star in:

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Word of the day dinkum
Pronunciation: ˈdiNGkəm
adjective
(of an article or person) genuine