<p><strong>Noun</strong></p><ul><li>the science or study of the techniques of secret writing, especially code and cipher systems, methods, and the like.</li><li>the procedures, processes, methods, etc., of making and using secret writing, as codes or ciphers.</li><li>the study or process of using algorithms to scramble or hide data, validate messages and digital signatures, etc., in order to secure digital information against unauthorized access or corruption.</li><li>an instance of this: The application’s cryptography provides a strong element of security, but is unlikely to be proof against all cyber threats.</li><li>anything written in a secret code, cipher, or the like.</li></ul>