Source : Free On-Line Dictionary of Computing

P-TAC
     
        Parallel Three Address Code.
     
        {Kid} is a refinement of {P-TAC}, used as an intermediate
        language for {Id}.
     
        ["P-TAC: A Parallel Intermediate Language", Z. Ariola et al,
        Fourth Intl Conf Func Prog Langs and Comp Arch, ACM Sept
        1989].