PSEUDONYM Meaning of PSEUDONYM in English [ 's(j)u:dənɪm ]■ noun a fictitious name, especially one used by an author.OriginC19: from Fr. ~e , from Gk pseudōnymos , from pseudēs 'false' + onoma 'name'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004