noun
also binary system
: a system of two stars that revolve around each other under their mutual gravitation and falling into one or more of three classes — compare eclipsing variable , spectroscopic binary , visual binary
noun
also binary system
: a system of two stars that revolve around each other under their mutual gravitation and falling into one or more of three classes — compare eclipsing variable , spectroscopic binary , visual binary
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012