Latin square

noun Mathematics.
  1. a square array of numbers, letters, etc., in which each item appears exactly once in each row and column: used in statistical analysis.

Origin of Latin square

First recorded in 1885–90
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British Dictionary definitions for latin square

Latin square

noun
  1. (in statistical analysis) one of a set of square arrays of n rows and columns, esp as used in statistics and studied in combinatorial analysis, built up from n different symbols so that no symbol occurs more than once in any row or column
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