-------------------------------------------------------------------------------------Dictionary meaning of 'Cipher'ci•pher also cy•pher (pronounce as: sifar) n. 1. The mathematical symbol (0) denoting absence of quantity; zero.2. An Arabic numeral or figure; a number.3. One having no influence or value; a nonentity.4. a. A cryptographic system in which units of plain text of regular length, usually letters, are arbitrarily transposed or substituted... Continue Reading →