Code name

A code name or cryptonym is a word or name used clandestinely to refer to another name or word. Codenames are often used for military purposes, or in espionage, but are also used in business, for example as the names of confidential projects.

There is a common but not universal convention of writing codenames in upper case.

Famous codenames:

• Operation Barbarossa
• Operation OVERLORD
• MKULTRA

Compare with:

• Code word

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