Definition of binary star in English:

binary star

Line breaks: bin¦ary star

noun

Astronomy
  • A system of two stars in which one star revolves round the other or both revolve round a common centre.
    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.

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Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
noun
elaborate ornamentation of a vocal melody