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  1. CIPHER Definition & Meaning - Merriam-Webster

    : to change (a message) into cipher. Middle English cipher "zero," from Latin cifra (same meaning), from Arabic ṣifr "empty" Nglish: Translation of cipher for Spanish Speakers. …

  2. CIPHER Definition & Meaning | Dictionary.com

    a secret method of writing or recording data, such as by substituting or adding letters or numbers, using specially formed symbols, or the like; code. The spies exchanged messages using a …

  3. Cipher - Wikipedia

    In cryptography, a cipher (or cypher) is an algorithm for performing encryption or decryption —a series of well-defined steps that can be followed as a procedure. An alternative, less common …

  4. Cipher | Definition, Types, & Facts | Britannica

    cipher, any method of transforming a message to conceal its meaning. The term is also used synonymously with ciphertext or cryptogram in reference to the encrypted form of the …

  5. Ciphering - definition of ciphering by The Free Dictionary

    Define ciphering. ciphering synonyms, ciphering pronunciation, ciphering translation, English dictionary definition of ciphering. also cy·pher n. 1. The mathematical symbol denoting …

  6. CIPHER | definition in the Cambridge English Dictionary

    CIPHER meaning: 1. a system of writing that prevents most people from understanding the message: 2. a person or…. Learn more.

  7. CIPHER definition and meaning | Collins English Dictionary

    A cipher is a secret system of writing that you use to send messages. ...converting their messages into ciphers. During World War II he worked as a cipher clerk. If you describe someone as a …

  8. ciphering, n. meanings, etymology and more | Oxford English …

    ciphering, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

  9. What is a Cipher? Definition, Types, Examples and Methods

    Apr 4, 2025 · Cipher is a frequently used algorithm in cryptology, a subject concerned with the study of cryptographic algorithms. It is a method of encrypting and decrypting data. The …

  10. cipher noun - Definition, pictures, pronunciation and usage notes ...

    Definition of cipher noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.