Square odd is a term used to describe numbers that are both odd and square. Some synonyms for square odd include odd perfect squares, odd squared numbers, and odd square integers. These terms all refer to the same concept of a number that is both an odd number and a perfect square, meaning that it can be expressed as the product of two identical odd integers. Other possible synonyms for square odd might include odd second powers, odd quadratic numbers, or odd even squares (since all perfect squares are even, but those that are also odd are the square odds or square odd integers).