Math.
a number x that is relatively prime to a given integer y and for which a number z exists whose square gives the same remainder as x when divided by y.
Math.
a number x that is relatively prime to a given integer y and for which a number z exists whose square gives the same remainder as x when divided by y.
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012