American English

Definition of pseudonym noun from the Oxford Advanced American Dictionary

 

pseudonym

 noun
noun
NAmE//ˈsudn̩ɪm//
 
 
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a name used by someone, especially a writer, instead of their real name She writes under a pseudonym. The rebel chief uses the pseudonym “Tigrillo”. compare pen-name
pseudonymous
 
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NAmE//suˈdɑnəməs//
 
adjective
See the Oxford Advanced Learner's Dictionary entry: pseudonym