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Meaning of obelus

ob•e•lus

Pronunciation: (ob'u-lus), [key]
— pl. -li
  1. a mark (− or ÷) used in ancient manuscripts to point out spurious, corrupt, doubtful, or superfluous words or passages.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.