transitive. Originally in Telegraphy: to prepare (a message) for transmission by putting it into code words (now chiefly historical). In later use…

To convert (a message, text, etc.) into coded form using a cipher; to encrypt.

transitive. To translate into cipher or code; also technical of computers (see quot. 1955). Also transferred.

transitive. To convert (data, a message, etc.) into cipher or code, esp. in order to prevent unauthorized access; to conceal in something by this…