magic square

/M AE1 JH IH0 K S K W EH1 R/
noun
  1. 1

    (games) A palindromic square word arrangement, usually in the form of a magic amulet.

    โ€œProbably the best-known magic square is the 5ร—5 square consisting of the words ROTAS OPERA TENET AREPO SATOR.โ€

  2. 2

    An n-by-n arrangement of n2 numbers such that the numbers in each row, in each column and along both diagonals all have the same sum.

Source: https://en.wiktionary.org/wiki/magic%20square