monoalphabetic substitution

mono·​alphabetic substitution

Definition of monoalphabetic substitution

: substitution in cryptography that uses a single substitution alphabet so that each plaintext letter always has the same cipher equivalent — compare polyalphabetic

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History and Etymology for monoalphabetic substitution

mon- + alphabetic

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Cite this Entry

“Monoalphabetic substitution.” Dictionary, Merriam-Webster, Accessed 28 Nov. 2020.

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