cipheralphabet

noun
UK /ˈsaɪfər ˈælfəbet/
US /ˈsaɪfər ˈælfəbɛt/

A cipheralphabet is a secret set of letters used to hide a message.

The spy used a cipheralphabet to write a note that only her friend could read.


OTHER MEANINGS

2. A substitution table that maps plain letters to coded letters.

The cipheralphabet showed that A became Q and B became R.

3. A set of symbols used in place of normal letters to keep writing private.

They made a cipheralphabet with squiggles and stars for their club.

4. The ordered list of characters a cipher uses when scrambling text.

Changing the cipheralphabet made the old message impossible to read.