Definitions for "Latin Square"
Keywords:  matrix, column, row, nxn, exactly
a square matrix of n rows and columns; cells contain n different symbols so arranged that no symbol occurs more than once in any row or column
a matrix in which each number occurs exactly once in every row and once in every column
an nxn matrix, in which the entries in each row and column are distinct
a special sort of block design with symmetrical arrangement of treatments in two directions