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

crack the code, goes without saying, break the code

genetic code, building code, dress code

Formal and Informal Expressions of code

In different contexts, you can replace 'code' with suitable alternatives. In a more formal setting, 'system, instructions' is apt. In informal speech or writing, 'program, script' is a commonplace synonym.

code: Explore its Definition & Usage

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

program
system
cipher
secret writing
instructions

Idioms Using code

crack the code
to solve a difficult problem or puzzle
Example
It took years for scientists to crack the genetic code.
goes without saying
something is so obvious that it does not need to be said
Example
It goes without saying that programmers need to know how to code.
break the code
to figure out the meaning of something written in code
Example
The spy was able to break the enemy's code and intercept their messages.

Phrases with code

genetic code
the sequence of nucleotides in DNA or RNA that determines the specific amino acid sequence in the synthesis of proteins
Example
Scientists are still working to understand the genetic code and its implications for human health.
building code
a set of regulations that specify the standards for construction of buildings and other structures
Example
The building code requires all new constructions to meet certain safety standards.
dress code
a set of rules specifying the required manner of dress at a formal event or in a particular social group
Example
The dress code for the wedding is black tie.

Origins of code

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

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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.