permutation

n (fml 文) 1 (esp mathematics 尤用於数学) (a) [U] variation in the order of a set of things 排列; 置换. (b) [C] any one of these arrangements 一组排列: The permutations of x, y and z are xyz, xzy, yxz, yzx, zxy, zyx. x、 y、 z的排列是xyz、 xzy、 yxz、 yzx、 zxy、 zyx. 2 (infml 口语作 perm) (Brit) (esp in football pools) selection of items from a group, to be arranged in a number of combinations （尤指足球普尔赌博中的）选定组合.

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