Is reciprocal only used in division?

No, the term "reciprocal" is not limited to division. It refers to a mathematical concept where one number is the multiplicative inverse of another, meaning that when a number and its reciprocal are multiplied together, the result is one. For example, the reciprocal of 2 is 1/2, and vice versa. While the concept is often associated with division, it applies broadly in various mathematical contexts, including algebra and functions.