What does m stand for in mathematics? M can usually represent the following meanings in mathematics:

1) stands for length unit: meter. This is the abbreviation of English meter (or meter);

2) Representative time unit: minutes. This is the abbreviation of English minute;

3) stands for one thousandth: milli. This is the abbreviation of English milli, which is usually added before the unit, and the value is one thousandth of the current unit. For example, mg: mg; mm:mm； Millisecond: Millisecond.

4) represent constants, especially integer constants, such as a, b, c, k, n.