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peroxidase
peroxide
peroxisome
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perp walk
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perpetual calendar
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permute

per·mute [ pər myt ] (past and past participle per·mut·ed, present participle per·mut·ing, 3rd person present singular per·mutes)


transitive verb 
Definition:
 
1. rearrange things: to change the order of items in a group, especially to rearrange them in every possible way

2. rearrange mathematical elements: to reorder the elements in a mathematical set

[Late 19th century. < Latin permutare "change completely" < mutare "to change"]

per·mut·a·bil·i·ty [ pər mytə bíllətee ] noun
per·mut·a·ble adjective
per·mut·a·bly adverb
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