Playfair cipher

noun

Definition of Playfair cipher

: a cipher involving a digraphic substitution from a single alphabet square which begins with the letters of a keyword and continues with the remaining letters of the alphabet less J

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History and Etymology for Playfair cipher

after Lyon, Baron Playfair †1898 British scientist & public official

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Dictionary Entries Near Playfair cipher

play fair

Playfair cipher

play fast and loose

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Cite this Entry

“Playfair cipher.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Playfair%20cipher. Accessed 23 Oct. 2021.

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