Noun
radix point (plural radix points)
(mathematics) The character used to separate the integer and fractional part of a number in a digital representation of a number, regardless of the base used.
If the radix point is not specified, then the string implicitly represents an integer and the unstated radix point would be off the right-hand end of the string, next to the least significant digit. Source: Internet
In fixed-point systems, a position in the string is specified for the radix point. Source: Internet
This article generally follows the convention that the radix point is set just after the most significant (leftmost) digit. Source: Internet