the name of another person taken by an author as a pen name.Compare pseudonym.
a work published under a name that is not that of the author.
Origin of allonym
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a name, often one of historical significance or that of another person, assumed by a person, esp an author
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012