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activation code a set of characters, consisting of numbers, letters, characters, or a combination of these, that is sent by a website to a user's email so that the website can verify the user's email address and comply with the user's request to begin a new service or change personal information. Once received, the user enters the code into the provided box on the website so that fulfillment of the user's request can begin.
add-on in computing, a supplementary program or piece of code written to alter, enhance, or extend the behavior of a main program. [1/2 definitions]
area code the first three numbers of a telephone number in the United States and Canada. You dial the area code first, then the telephone number. In the phone number "607-555-1234," the area code is "607."
ASCII abbreviation of "American Standard Code for Information Interchange," originally, a standard code using numbers to represent characters used in writing English, allowing textual data to be transferred between computers. ASCII has been expanded to allow character sets from other languages to be similarly encoded.
bar code a set of dark bars on a light background printed on the labels of goods and mail. A bar code is scanned by a computer that reads information such as price.
BASIC a beginning computer language. BASIC stands for "beginner's all-purpose symbolic instruction code."
breach a violation, as of a law, code, or promise. [1/7 definitions]
Bushido (sometimes l.c.) the behavioral code of the feudal Japanese samurai, which stressed the value of honor above life.
Calvinism practices and beliefs based on these teachings, esp. a strict, severe code of morality. [1/2 definitions]
canon1 a religious law, code, or body of laws. [1/2 definitions]
cipher a system that substitutes letters and symbols for the letters and symbols contained in a written message in order to conceal its meaning; code. [2/7 definitions]
code a system of symbols or signals used in place of letters and numbers. Code is used to send a message when you want to hide its meaning. [1/2 definitions]
codeless combined form of code.
codify to classify and organize, esp. into a legal code.
color barrier unspoken social code of racial segregation or discrimination, esp. in sports, education, public service, and the like.
computer language a system of words and symbols that is used to program a computer; code. There are hundreds of computer languages, such as C, Cheetah, and JavaScript.
computer virus a code added to a computer program that can attach itself to and seriously damage other programs.
cryptogram a message written so as to conceal its meaning by the use of a cipher or code. [1/2 definitions]
dash the longer of the two basic signals in Morse code. [1/12 definitions]
decemvir one of a council of ten members that drew up the first code of Roman laws in 450 B.C. [1/2 definitions]
decipher to change from a code into ordinary language. [1/2 definitions]