An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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obelus
  نشانه‌ی ِ بخش  
nešâne-ye baxš
Fr.: obélus  

The symbol ÷ used to indicate → division. This symbol was first used as a → division sign by Johann Rahn (or Rhonius) (1622-1676) in 1659 in Teutsche Algebra.

Etymology (EN): From Gk. obelus “sharpened stick, spit, pointed pillar,” related to obelisk, originally used in ancient manuscripts to mark passages that were suspected of being corrupted, doubtful, or spurious.

Etymology (PE): → division sign.