资料来源 : Free On-Line Dictionary of Computing

niladic
     
         A less common synonym for "{nullary}",
        presumably following the more common {monadic}, {dyadic}, etc.
        The term was in use as early as 1976, and probably originated
        in {APL}.
     
        [APL: An Interactive Approach, 1976].
     
        (2001-01-27)