code Definition

  • 1a system of words, letters, figures, or symbols used to represent others, especially for the purposes of secrecy or brevity
  • 2a system of signals, such as sounds, light flashes, or flags, used to send messages
  • 3a set of instructions for a computer program

Using code: Examples

Take a moment to familiarize yourself with how "code" can be used in various situations through the following examples!

  • Example

    The message was written in code and had to be deciphered.

  • Example

    The ship signaled in Morse code.

  • Example

    I need to write some code for this project.

  • Example

    The dress code for the event is formal attire.

  • Example

    The company's code of conduct outlines the expected behavior of employees.

code Synonyms and Antonyms

Synonyms for code

Idioms Using code

  • to solve a difficult problem or puzzle


    It took years for scientists to crack the genetic code.

  • something is so obvious that it does not need to be said


    It goes without saying that programmers need to know how to code.

  • to figure out the meaning of something written in code


    The spy was able to break the enemy's code and intercept their messages.

Phrases with code

  • the sequence of nucleotides in DNA or RNA that determines the specific amino acid sequence in the synthesis of proteins


    Scientists are still working to understand the genetic code and its implications for human health.

  • a set of regulations that specify the standards for construction of buildings and other structures


    The building code requires all new constructions to meet certain safety standards.

  • a set of rules specifying the required manner of dress at a formal event or in a particular social group


    The dress code for the wedding is black tie.

Origins of code

from Middle English 'cōd', meaning 'systematic compilation of laws'


Summary: code in Brief

The term 'code' [koʊd] refers to a system of words, letters, figures, or symbols used to represent others, often for secrecy or brevity. It can also refer to a set of instructions for a computer program or a system of signals used to send messages. Phrases like 'genetic code' and 'building code' extend the term into specialized contexts, while idioms like 'crack the code' and 'break the code' denote solving a difficult problem or puzzle.

How do native speakers use this expression?