The symbol used to indicate division. In typography, an obelus has a more general definition as any symbol, such as the dagger (), used to indicate a footnote (Bringhurst 1997, p. 225).

Bringhurst, R. The Elements of Typographic Style, 2nd ed. Point Roberts, WA: Hartley and Marks, 1997.

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Weisstein, Eric W. "Obelus." From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/Obelus.html