[ pol-ee-al-fuh-bet-ik, pol-ee- ]
/ ˈpɒl iˌæl fəˈbɛt ɪk, ˌpɒl i- /
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.
CAN YOU FEEL THE WEAL WITH THIS WORD OF THE DAY QUIZ?
Did you collect all of last week’s words, but eftsoons forget what they mean? Don’t worry, we’re here to jog your memory. See how many words from the week of May 18 to 24 you can get right!
Question 1 of 7
Compare monoalphabetic substitution.
Origin of polyalphabetic substitution
1935–40; poly- + alphabetic
Words nearby polyalphabetic substitution
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020