What is denominator definition?

The denominator is the bottom part of a fraction. It represents the total number of equal parts that a whole is divided into. It determines the size of each individual part or unit in the fraction. For example, in the fraction 3/4, the denominator is 4, which means that the whole is divided into four equal parts, and each part is one-fourth of the whole. The denominator cannot be zero, as division by zero is undefined.