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单词 permutationist
释义

WordReference Random House Learner's Dictionary of American English © 2024
per•mu•ta•tion /ˌpɜrmyʊˈteɪʃən/USA pronunciation   n. 
  1. [uncountable] the act of permuting;
    rearrangement.
  2. Mathematics any of the changes that result from such rearrangement:[countable]Two of the possible permutations of the elements abc are acb or bac.
See -mut-.
WordReference Random House Unabridged Dictionary of American English © 2024
per•mu•ta•tion  (pûr′myŏŏ tāshən),USA pronunciation n. 
  1. the act of permuting or permutating;
    alteration;
    transformation.
  2. Mathematics
    • Mathematicsthe act of changing the order of elements arranged in a particular order, as abc into acb, bac, etc., or of arranging a number of elements in groups made up of equal numbers of the elements in different orders, as a and b in ab and ba;
      a one-to-one transformation of a set with a finite number of elements.
    • any of the resulting arrangements or groups. Cf. combination (def. 8b).
  • Latin permūtātiōn- (stem of permūtātiō) thoroughgoing change. See per-, mutation, permute
  • Middle French permutacion)
  • Middle English permutacioun (1325–75
per′mu•tation•al, adj. 
per′mu•tation•ist, n. 
    • 1.See corresponding entry in Unabridged modification, transmutation, change.

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