The word code has a number of meanings.
- A code is a rule for converting a piece of information into another object or action, not necessarily of the same sort.
- The genetic code made of DNA specifies which transfer RNA sequence to build.
- A civil code, is set of rules, such as code of honor, code of laws, or dress code. See also codification, legal code, penal code, fire code, traffic code, electrical code, Code of Federal Regulations.
- Code Blue is a medical jargon term for certain types of critical medical emergency.
- Code Red has its own disambiguation page.
- Code Adam is a missing child announcement.