n.
A fictitious name, especially a pen name.
[French pseudonyme, from Greek pseudōnumon, neuter of pseudōnumos, falsely named : pseudēs, false; see pseudo- + onuma, name.]
pseudonymity pseu'do·nym'i·ty n.pseudonymous pseu·don'y·mous (sū-dŏn'ə-məs) adj.
pseudonymously pseu·don'y·mous·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.