noun
pseudonym
SOO-duh-nim/ˈsuːdənɪm/
A name used instead of one's real name.
The author uses a pseudonym to keep her identity private.

Etymology
The pieces literally mean “false name.” Here “false” describes an assumed identity rather than the person's real name, especially a name an author uses to conceal who wrote a work.
In context
Now, Touchstone Films was simply a pseudonym. It was not a distinct business operation.
More examples
- She publishes her mystery novels under a pseudonym.
- The report uses pseudonyms to protect the patients' privacy.
- Mark Twain was the pseudonym of Samuel Clemens.
Forms
pseudonym · pseudonyms
pseudonymous adjective — Using a name other than one's own.
Similar words
- alias
- Often an alternate identity used for concealment or official records.
- pen name
- Specifically a name used by an author when publishing.