Source : WordNet®

pseudo
     adj : (often used in combination) not genuine but having the
           appearance of; "a pseudo esthete"; "pseudoclassic"

pseudo
     n : a person who makes deceitful pretenses [syn: {imposter}, {impostor},
          {pretender}, {fake}, {faker}, {fraud}, {sham}, {shammer},
          {pseud}, {role player}]

Source : Free On-Line Dictionary of Computing

pseudo
     
         /soo'doh/ ({Usenet}) Pseudonym.
     
        1. An {electronic-mail} or {Usenet} persona adopted by a human
        for amusement value or as a means of avoiding negative
        repercussions of one's net.behaviour; a "nom de {Usenet}",
        often associated with forged postings designed to conceal
        message origins.  Perhaps the best-known and funniest hoax of
        this type is {BIFF}.
     
        2. Notionally, a {flamage}-generating {AI} program simulating
        a {Usenet} user.  Many flamers have been accused of actually
        being such entities, despite the fact that no AI program of
        the required sophistication yet exists.  However, in 1989
        there was a famous series of forged postings that used a
        phrase-frequency-based travesty generator to simulate the
        styles of several well-known flamers; it was based on large
        samples of their back postings (compare {Dissociated Press}).
        A significant number of people were fooled by the forgeries,
        and the debate over their authenticity was settled only when
        the perpetrator came forward to publicly admit the hoax.
     
        [{Jargon File}]
     
        (1995-03-13)