Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “cipher”

See all translations

cipher

noun uk   /ˈsaɪ.fər/ us    /-fɚ/

cipher noun (SECRET LANGUAGE)

[C or U] ( also cypher) a system of writing that prevents most people from understanding the message: The message was written in cipher.
Synonym

cipher noun (PERSON)

[C] formal disapproving a person or group of people without power, but used by others for their own purposes, or someone who is not important: The interim government is a mere cipher for military rule.

cipher noun (NUMBER)

[C] US old-fashioned a zero: If you have no children, enter a cipher in the space on the form.
Translations of “cipher”
in Spanish código…
in French code…
in German die Chiffre…
in Chinese (Traditional) 密語, 密碼, 暗號…
in Chinese (Simplified) 密语, 密码, 暗号…
(Definition of cipher from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of cipher?
Add Cambridge dictionaries to your browser to your website

Definitions of “cipher” in other dictionaries

Word of the Day

baby

a very young child, especially one that has not yet begun to walk or talk

Word of the Day

The way we move (Verbs for walking and running)

by Kate Woodford,
March 25, 2015
​​​ This week we’re looking at interesting ways to describe the way that people move. Most of the verbs that we’ll be considering describe how fast or slow people move. Others describe the attitude or state of mind of the person walking or running. Some describe both. Starting with verbs for walking slowly,

Read More 

stackin’ p

March 30, 2015
idiom slang earning a lot of money ‘That’s a very generous present.”Yeah, well, she’s stackin’ p, innit?’

Read More