Meaning of PERMUTATION in English

per ‧ mu ‧ ta ‧ tion /ˌpɜːmjʊˈteɪʃ ə n $ ˌpɜːr-/ BrE AmE noun [countable]

[ Date: 1300-1400 ; Language: Old French ; Origin: permutacion , from Latin , from permutare 'to change completely' ]

one of the different ways in which a number of things can be arranged:

a sandwich shop that sells every possible permutation of meat and bread

⇨ ↑ combination

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.