An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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spacelike interval
  اندروار ِ فضاسان  
andarvâr-e fazâsân
Fr.: intervalle genre espace  

The → space-time interval between two → events if it is imaginary, i.e.
ds2< 0.

See also: → spacelike; → interval.