cipher
Pluralciphers
Verbciphers, ciphering, ciphered
UK spellingcypher
Pluralciphers
Formsciphers, ciphering, ciphered
- 1A secret way of changing the letters of a message so only certain people can read it.
The website uses a strong cipher to keep your password safe.
Fast computers can now break many older ciphers.
UsagePeople break or crack a cipher.
Note
- 2A secret message written so that only some people can read it.
She found a cipher hidden inside the old book.
Nobody in class could read the cipher on the board.
- 3
- 4
- 5A design made by joining letters together, such as the first letters of a person's name.
The old mailbox still shows the king's cipher.
The painter signed each picture with a small cipher instead of her full name.
UsageMost people say monogram for joined initials.
Similarmonogram
Note
- 6A meeting where people play or rap hip-hop music together just for fun.
Every Friday night, rappers form a cipher in the park and take turns.
He was too shy to rap in the cipher at first.
UsageRappers say they are in the cipher.
Note
- 7The way shared cannabis is passed around a group, usually in a circle, or a time when people smoke it.
He passed the joint to his left to keep the cipher moving.
Police broke up their cipher in the park and took the weed.
Similarrotation
Note
- 8Zero, the number 0.
We saw earlier about this new symbol, the cipher, that can make numbers big.
2024, Numberphile, by Brady Haran with Rob EastawayHere, cipher means zero, the number 0.O pardon: ſince a crooked Figure may / Atteſt in little place a Million, / And let vs, Cyphers to this great Accompt, / On your imaginarie Forces worke.
1599, William Shakespeare, “The Life of Henry the Fift”UsageToday people say zero.
Note
- 9
- 10A set of three digits in a big number, often split off by commas or periods.
- 11
- 12To add, subtract, and do other math with numbers.
My grandpa left school at twelve, but he could read and cipher.
Can you cipher too—along with your reading and writing?
1979, Octavia E[stelle] Butler, KindredHere, cipher means to do math, like adding and subtracting numbers.UsageSay calculate or figure in normal writing.
Similarcalculate, compute, figure
Note
- 13To work out what some writing or a secret message says.
Yea the illiterate that know not how To cipher what is writ in learned bookes, VVill cote my lothſome treſpaſſe in my lookes.
1594, William Shakespeare, Lucrece (First Quarto)Here, cipher means to read and work out what some writing says.Note
- 14A problem in an organ that makes a pipe keep playing when no key is pressed.
- 15Of an organ pipe, to make a sound by itself when no one is playing it.
Showing meanings only.
Practice
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Origin
From an Arabic word meaning "zero" or "empty".
Checked 31 Oct 2026 · 1 fact
- Cipher ultimately comes from Arabic ṣifr, meaning “zero” or “empty”. en.wiktionary.org