cryptogram

名词 cryptogram:

1. a piece of writing in code or cipher
   同义词：cryptograph, secret writing

cryp.to.gram

n.（名词）
A piece of writing in code or cipher.Also called cryptograph
密码文，电码文：一种密码或电码的书写形式也作 cryptograph
A figure or representation having a secret or occult significance.
隐晦图形：一种具有秘密含义的图形或表现形式

【引伸】
cryp.togram.mic
adj.（形容词）