What does cryptograph mean?
A cryptograph is a method of secret writing, or a device used for this purpose. It involves encoding a message so that it can only be deciphered by someone with the necessary key or password.
Example
"The cryptograph used by the ancient Greeks was a simple substitution cipher that replaced each letter with a different letter a fixed number of positions down the alphabet."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.