👉 The term "septomarginal" in the context of mathematics and engineering refers to a particular type of variable that is used for representing the relationship between two variables. In other words, it represents a point or value where one variable changes while the other remains constant. For example, if you have two variables x and y, and you want to represent their relationship mathematically, you could use the term "septomarginal" to denote the point at which both x and y