A palindromic square word arrangement, usually in the form of a magic amulet. Probably the best-known is the 5x5 square consisting of the words ROTAS OPERA TENET AREPO SATOR
A square array of numbers arranged so that the sum of numbers in each row, column, and diagonal is the same The sum in each row, column, and diagonal is called the magic sum The number of rows or columns is called the rank of the magic square
a square matrix of n rows and columns; the first n-squared integers are arranged in the cells of the matrix is such a way that the sum of any row or column or diagonal is the same