Permutation



GRE

解释

GRE 红宝书

• n. ( 数学中) 排列变化, 彻底改变
• ［英］ n. ( 数学中) 排列变化, 彻底改变 ( major or fundamental change based primarily on rearrangement of existent elements)
• ［记］ per ( 全部) ＋mut ( 改变) ＋ation -> 全部改变

Webster Collegiate

noun

• Etymology: Middle English permutacioun exchange, transformation, from Anglo-French, from Latin permutation-, permutatio, from permutare
• Date: 14th century
• 1. often major or fundamental change (as in character or condition) based primarily on rearrangement of existent elements <the system has gone through several permutations>; also a form or variety resulting from such change <technology available in various permutations>
• 2.
  • a. the act or process of changing the lineal order of an ordered set of objects
  • b. an ordered arrangement of a set of objects
• ? permutational adjective

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