The term "m-n" typically refers to a mathematical expression representing the difference between two variables, m and n. In this context, m and n can represent any numbers, and the operation involves subtracting n from m. This operation is fundamental in arithmetic and is used in various mathematical applications. In a broader sense, "m-n" can also be used in programming and data analysis to denote the difference between two values or datasets. Understanding this concept is essential for tasks such as calculating changes, comparing quantities, and analyzing trends in fields like statistics and computer science.