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permutation

/pərˈmjuːtəʃən/ · per.mu·ta·tion
noun
  1. One of the ways something exists, or the ways a set of objects can be ordered. Which permutation for completing our agenda items makes the most sense?
noun
  1. A one-to-one mapping from a finite set to itself. This permutation takes each element to the one following it, with the last mapped back to the first.
noun
  1. An ordering of a finite set of distinct elements. There are six permutations of three elements, e.g. {abc, acb, bac, bca, cab, cba}.
Did you know? The concept of permutations has been used in various fields, including mathematics, computer science, and cryptography, to solve problems and create secure codes.
Written by Lexi Wordsworth, Dictionary Editor 2 lookups Added Jul 24, 2026