multi-alphabetcipher
nounUK /ˌmʌlti ˈælfəbɛt ˌsaɪfə/
US /ˌmʌlti ˈælfəbɛt ˌsaɪfər/
A secret code that uses more than one set of letters to hide a message.
The spy used a multi-alphabetcipher so that each letter of the message was scrambled in a different way.
OTHER MEANINGS
2. A cipher that switches between several alphabets to make patterns harder to spot.
Breaking the multi-alphabetcipher took the codebreaker many hours.
3. Any coding system that combines two or more letter-shifting rules.
The puzzle was a multi-alphabetcipher with three different shifting rules.
4. A method of secret writing where the same letter can be encoded differently each time.
Because it was a multi-alphabetcipher, the letter E did not always turn into the same symbol.