codealphabet

noun
UK /ˈkəʊd ˈælfəbet/
US /ˈkoʊd ˈælfəbɛt/

A code alphabet is a special set of letters or symbols used to write secret messages.

The spies used a code alphabet to keep their plans safe.


OTHER MEANINGS

2. A list that matches each letter to a number or symbol for encoding.

The code alphabet showed that A equals 1 and B equals 2.

3. A set of signals, like dots and dashes, used to send messages.

Morse code is a famous code alphabet made of dots and dashes.

4. A chart used by programmers to turn letters into computer numbers.

The code alphabet helped the computer understand the word 'cat'.