number code

Encrypted numerical sequence

A number code is a system where numbers represent letters, words, or other information—used for secrecy, brevity, or organization.

Children pass notes using simple number codes where 1=A, 2=B.

More broadly, any numerical identifier serving as a reference: What's the number code for that paint color?

Also called a numeric code.

Related

PIN · combination · sequence · binary · cryptic · unlock · serial · key · algorithm · lock · hack · ID · barcode · scramble · puzzle · safe · crack · hidden

Opposites
character composition

number codealphanumeric code

String of letters and digits

passphrase

coding system type

number codecolor code

Classification using distinct hues

morse code · semaphore · hieroglyphics · sign language

secrecy/encoding

number codeplain text

Unencoded readable characters

cleartext · open communication · plain language

Family

number, code, numbers, codes, numbered, numbering, numberless, innumerable, numeral

Familiarity
Top 500,000
Profile
Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G