The symbol used in continental Europe, most of North and South America (with the exception of the United States and Canada), and most of Africa to denote a decimal point, for example 3,14159....
Decimal Comma
See also
Decimal PointExplore with Wolfram|Alpha
References
Wells, D. The Penguin Dictionary of Curious and Interesting Numbers. Middlesex, England: Penguin Books, p. 80, 1986.Referenced on Wolfram|Alpha
Decimal CommaCite this as:
Weisstein, Eric W. "Decimal Comma." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/DecimalComma.html