Definition: "mephistopheleanly" is a term in mathematics that refers to an expression or expression of mathematical operations. It can be used to describe the way expressions are manipulated and evaluated, with some elements being more complex than others. The term comes from the Latin word "mepeh," which means "to make me blush," and it's often used in contexts where there is a tendency towards exaggeration or excess. For example, consider the following expression: ``` 1 + 2