1. Encipher
2. To compute arithmetically

To attach a code to.

1. See encrypt.
2. In programming, to put something into code, which frequently involves changing the form—for example, changing a decimal number to binary-coded form. See also binary-coded decimal, EBCDIC.
To convert ordinary language into code; SYN. code, encipher, cipher, cypher, encrypt, inscribe, write in code.