denominator
The bottom number in a fraction — how many equal pieces the whole is cut into.
In a fraction \frac{a}{b}, the denominator is b, the number on the bottom. It tells you how many equal-sized pieces the whole was divided into; it can never be zero.
Examples
In \frac{3}{5}, the denominator is 5 — the whole was cut into five equal pieces.
See also
Point table
Graph settings
Calculator