A fictitious name, especially a pen name.
[French pseudonyme, from Greek pseudōnumon, neuter of pseudōnumos, falsely named : pseudēs, false; see PSEUDO- + onuma, name; see n-men- in the Appendix of Indo-European roots.]
pseu·dony·mous (s-dŏnə-məs) adj.
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.