perfect square
Mathematical term for an integer that is the square of another integer, or a polynomial that is the square of another polynomial.
9 is a perfect square.
Please transform this expression into a perfect square form.
平方数 also means 'square number' and is more common in everyday math contexts, while 完全平方 is a stricter mathematical term often used in algebra.
Compound of 完全 (complete) and 平方 (square), directly translating the English mathematical term 'perfect square'.