ABCDEFGHIJKLMNOPQRSTUVWXYZ Definition of Odd Number more ... Any integer (not a fraction) that cannot be divided exactly by 2. The last digit is 1, 3, 5, 7 or 9 Example: −3, 1, 7 and 35 are all odd numbers. Try it yourself below: ../numbers/images/choose.js?mode=odd See: Integer, Divisible, Even Number Even and Odd Numbers