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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

player

player piano

play fair

Playfair cipher

play fast and loose

playfellow

playfield

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