Definitions for **"Square number"**

(2) A number that is the product of a whole number multiplied by itself; a whole number to the second power. 25 is a square number, because 25 = 5 x 5. A square number can be represented by a square array. Example: 352 = 35 x 35 = 1225.

a number that can be expressed as the product of two equal numbers, e.g. 36 = 6 × 6, and so 36 is a square number.

A number of the form n^2.