High Quality Content by WIKIPEDIA articles! An obelus ( ) (plural, obeli) is a symbol consisting of a short line with dots above and below. It is mainly used to represent the mathematical operation of division. It is therefore also known as a division sign. The word "obelus" comes from the Greek word for a sharpened stick, spit, or pointed pillar. This is the same root as that of the word "obelisk". Originally this sign (or a plain line) was used in ancient manuscripts to mark passages that were suspected of being corrupted or spurious.

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