用密码写的通信
Cryptograph \Cryp"to*graph\ (-gr?f), n. [Gr. krypto`s hidden + -graph: cf. F. cryptographe.] Cipher; something written in cipher. ``Decipherers of cryptograph.'' --J. Earle.
cryptograph n 1: a secret method of writing [syn: {cipher}, {cypher}, {secret code}] 2: a piece of writing in code or cipher [syn: {cryptogram}, {secret writing}] 3: a device for deciphering codes and ciphers