Encrypted text. / (games) A type of word puzzle in which text encoded by a simple cipher is to be decoded.

Having hidden meaning. / Mystified or of an obscure nature. / Involving use of a code or cipher.

(informal) A cryptic crossword puzzle.

A form of cryptography which allows users to communicate securely without previously agreeing on a shared secret key (abbreviation PKC)

(cryptozoology) A creature known only from folklore or legend, the existence of which is not proven by scientific observation.

A person who is an expert on creating codes and cyphers. Someone who studies cryptology.

The science of analyzing and breaking of codes and ciphers. / An analysis or decrypting of a specific text or a specific code or cipher.

An expert in analyzing and breaking codes and ciphers.

(chemistry) any of a class of polycyclic compounds related to the crown ethers, having three chains attached at two nitrogen atoms

(chemistry) a cryptand