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Definition: code


(1) A set of machine symbols that represents data or instructions. See data code and machine language.

(2) Any representation of one set of data for another. For example, a parts code is an abbreviated name of a product, product type or category. A discount code is a percentage.

(3) To write a program. See coding, source code and line of code.

(4) To encode for security purposes. See cryptography and coding.