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ci·pheralso cy·pher (sī′fər)
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.
a. A cryptographic system in which units of text of regular length, usually letters, are transposed or substituted according to a predetermined code.
b. The key to such a system.
c. A message written or transmitted in such a system.
5. A design combining or interweaving letters or initials; a monogram.
v. ci·phered, ci·pher·ing, ci·phers also cy·phered or cy·pher·ing or cy·phered
To solve problems in arithmetic; calculate.
1. To put in secret writing; encode.
2. To solve by means of arithmetic.
1. a method of secret writing using substitution or transposition of letters according to a key
2. a secret message
3. the key to a secret message
4. (Mathematics) an obsolete name for zero1
5. (Mathematics) any of the Arabic numerals (0, 1, 2, 3, etc, to 9) or the Arabic system of numbering as a whole
6. a person or thing of no importance; nonentity
7. a design consisting of interwoven letters; monogram
8. (Instruments) music a defect in an organ resulting in the continuous sounding of a pipe, the key of which has not been depressed
9. to put (a message) into secret writing
10. (Instruments) (intr) (of an organ pipe) to sound without having the appropriate key depressed
11. (Mathematics) rare to perform (a calculation) arithmetically
[C14: from Old French cifre zero, from Medieval Latin cifra, from Arabic sifr zero, empty]
2. any of the Arabic numerals or figures.
3. a person or thing of no value or importance; nonentity.
a. a secret method of writing, as by code.
b. writing done by such a method; a coded message.
5. the key to a secret method of writing.
6. a combination of letters, as the initials of a name; monogram.v.i.
7. to use figures or numerals arithmetically.
8. to write in or as in cipher.v.t.
9. to calculate numerically; figure.
10. to convert into cipher; encipher.Also, esp. Brit., cypher.
[1350–1400; Middle English siphre < Medieval Latin ciphra < Arabic ṣifr empty, zero; translation of Skt śūnyā empty]
See also related terms for zero.
Any cryptographic system in which arbitrary symbols (or groups of symbols) represent units of plain text of regular length, usually single letters; units of plain text are rearranged; or both, in accordance with certain predetermined rules. See also cryptosystem.
Past participle: ciphered
Switch to new thesaurus
|Noun||1.||cipher - a message written in a secret code |
message - a communication (usually brief) that is written or spoken or signaled; "he sent a three-word message"
|2.||cipher - a mathematical element that when added to another number yields the same number|
|3.||cipher - a quantity of no importance; "it looked like nothing I had ever seen before"; "reduced to nil all the work we had done"; "we racked up a pathetic goose egg"; "it was all for naught"; "I didn't hear zilch about it"|
relative quantity - a quantity relative to some purpose
nihil - (Latin) nil; nothing (as used by a sheriff after an unsuccessful effort to serve a writ); "nihil habet"
|4.||cipher - a person of no influence|
|5.||cipher - a secret method of writing |
code - a coding system used for transmitting messages requiring brevity or secrecy
|Verb||1.||cipher - convert ordinary language into code; "We should encode the message for security reasons"|
encode - convert information into code; "encode pictures digitally"
|2.||cipher - make a mathematical calculation or computation|
math, mathematics, maths - a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement
reason - think logically; "The children must learn to reason"
quantise, quantize - apply quantum theory to; restrict the number of possible values of (a quantity) or states of (a physical entity or system) so that certain variables can assume only certain discrete magnitudes that are integral multiples of a common factor; "Quantize gravity"
work out - be calculated; "The fees work out to less than $1,000"
extract - calculate the root of a number
process - perform mathematical and logical operations on (data) according to programmed instructions in order to obtain the required information; "The results of the elections were still being processed when he gave his acceptance speech"
prorate - divide or assess proportionally; "The rent was prorated for the rest of the month"
miscalculate, misestimate - calculate incorrectly; "I miscalculated the number of guests at the wedding"
recalculate - calculate anew; "The costs had to be recalculated"
multiply - combine by multiplication; "multiply 10 by 15"
differentiate - calculate a derivative; take the derivative
integrate - calculate the integral of; calculate by integration
survey - plot a map of (land)
estimate, gauge, approximate, guess, judge - judge tentatively or form an estimate of (quantities or time); "I estimate this chicken to weigh three pounds"
budget - make a budget
3. (= monogram) → monograma m
secret writing; a code. The message was written in cipher. syferskrif شِفْرَه، رُموز шифър código šifra, kód die Chiffre kodeskrift; kode κώδικας, μυστική γραφή código salakiri رمز salakirjoitus codeצופן शून्य znak titkosírás sandi dulmál scrittura cifrata 暗号 암호문 šifras šifrs; kods tulisan rahsia geheimschriftkode, chifferskriftszyfr ټكى، سفر (ه código cod шифр šifrované písmo šifra šifra chiffer รหัสลับ şifre 密碼 шифр, код خفیہ تحریری زبان mật mã 密码