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Definition of Polyalphabetic
1. Adjective. Describing a substitution cipher in which plaintext letters in different positions are enciphered using different cryptoalphabets ¹
¹ Source: wiktionary.com
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1. Adjective. Describing a substitution cipher in which plaintext letters in different positions are enciphered using different cryptoalphabets ¹
¹ Source: wiktionary.com