General English

  • noun secret words or a system agreed as a way of sending messages

General Science

  • noun a system of numbers, letters or symbols used to represent language or other information
  • noun rules used to convert instructions or data from one form to another
  • verb to convert instructions, information or data into another form


  • noun a system of signs, numbers, or letters which mean something


  • noun a system of numbers, letters or symbols used to represent language which has to be learned and decoded in order for the receiver to understand the meaning
  • noun a series of pulses by which an aircraft transponder replies to a signal from the ground


  • noun a sequence of computer instructions
  • verb to write a program in a programming language


  • The legal requirements of local and other governing bodies concerning construction and occupancy. The enactment and enforcement of codes is intended to safeguard the public's health, safety, and welfare.


  • A system of symbols or values, accompanied by rules used to represent information, such as data, and to convert it from one form to another. For instance, ASCII code.
  • A set of computer program instructions. Also called program code, or computer code (1). Also, to write such instructions.
  • A set of programming instructions and statements that are expressed in a form suitable for input into an assembler, compiler, or translator, which in turn transforms said code into machine code. Such code is usually written in a high-level or assembly language which is understandable by humans, while only machine code can be directly executed by the CPU. Also called source code.
  • To scramble information, such as data, in a manner which only those with a key can decipher. Usually used for security purposes. Also called encode (2), encrypt, or scramble (1).
  • Information which scrambled, or encoded.
  • The key to unscramble coded information. Also called key (2).

Information & Library Science

  • noun a group of numbers or letters used to identify something.


  • noun an official set of laws or regulations.
  • noun the set of laws of a country

Media Studies

  • noun a set of rules governing some form of behaviour, either rigidly enforced or used for guidance only


  • verb to provide the genetic information which causes a specific amino acid to be produced


  • noun a system of words, letters, numbers or other symbols, which is used to write secret messages


  • verb to write something using secret symbols or signs


  • noun a system of accepted laws and regulations that govern procedure or behaviour within a particular sport

Origin & History of “code”

‘System of secret communication signs’ is a relatively recent semantic development of the word code, which emerged in the early 19th century. It derived from an earlier sense ‘system of laws’, which was based on a specific application to various sets of statutes introduced by the Roman emperors. The word itself came from Old French code, a descendant of Latin cōdex, whose meaning ‘set of statutes, book of laws’ derived from a broader sense ‘book’. this in turn came from an earlier ‘piece of wood coated with wax for writing on’, which was based ultimately on ‘tree trunk’, the word’s original meaning. Codex itself was borrowed into English in the 16th century. Its Latin diminutive form, cōdicillus, produced English codicil (15th c.).