monoalphabetic substitution

American  

[mon-oh-al-fuh-bet-ik suhb-sti-too-shuhn, mon-oh-] / ˈmɒn oʊˌæl fəˈbɛt ɪk ˌsʌb stɪˈtu ʃən, ˌmɒn oʊ- /

noun

Cryptography.

1. a system of substitution that uses only one cipher alphabet in a cryptogram so that each plaintext letter is always represented by the same cipher.

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Etymology

Origin of monoalphabetic substitution

1935–40; mono- + alphabetic ( def. )

Example Sentences

They were both fans of the monoalphabetic substitution cipher.”

From "Book Scavenger" by Jennifer Chambliss Bertman

They were both fans of the monoalphabetic substitution cipher.”

From "Book Scavenger" by Jennifer Chambliss Bertman