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pol'y•al•pha•bet'ic substitu'tion



Pronunciation: (pol'ē-al"fu-bet'ik, pol"ē-), [key] Cryptography.
a system of substitution that mixes together a number of cipher alphabets in a cryptogram so that each plaintext letter is represented by a cipher that repeatedly changes. Cf. monoalphabetic substitution.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

polyalcoholpolyamide

 

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