| 单词 | polyalphabetic substitution |
| 释义 | polyalphabetic substitution[ pol-ee-al-fuh-bet-ik suhb-sti-too-shuhn, ‐tyoo-shuhn, pol-ee- ] / ˈpɒl iˌæl fəˈbɛt ɪk ˌsʌb stɪˈtu ʃən, ‐ˈtyu ʃən, ˌpɒl i- / noun Cryptography.a system of substitution that mixes together a number of cipher alphabets in a cryptogram so that each plaintext letter is represented by a cipher that repeatedly changes. Compare monoalphabetic substitution. Origin of polyalphabetic substitution1935–40; poly- + alphabetic Words nearby polyalphabetic substitutionpolyadenitis, polyadenopathy, polyadenylic acid, polyadic, polyalcohol, polyalphabetic substitution, polyamide, polyamine, polyamorous, polyamory, polyandric Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 |
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