n. A short symbol, often with little relation to the item it represents.n. A body of law, sanctioned by legislation, in which the rules of law to be specifically applied by the courts are set forth in systematic form; a compilation of laws by public authority; a digest.n. Any system of principles, rules or regulations relating to one subject; as, the medical code, a system of rules for the regulation of the professional conduct of physicians; the naval code, a system of rules for making communications at sea means of signals.n. A set of rules for converting information into another form or representation.n. A cryptographic system using a codebook that converts words or phrases into codewords.n. A programming language (or other computer language), a program, a routine written in it, or, more generally, the input of a translator, an interpretator or a browser, namely: source code, machine code, bytecode.n. A computer program, or more generally, any defined computing process.v. To write software programs.v. To categorise by assigning identifiers from a schedule, for example CPT coding for medical insurance purposes.v. To encode.v. Of a patient, to suffer a sudden medical emergency such as cardiac arrest.v. To encode a protein.