Source : Free On-Line Dictionary of Computing

indirect address
     
         An {addressing mode} found in many processors'
        {instruction sets} where the instruction contains the address
        of a memory location which contains the address of the operand
        (the "{effective address}") or specifies a {register} which
        contains the effective address.  In the first case
        (indirection via memory), accessing the operand requires two
        memory accesses - one to fetch the effective address and
        another to read or write the actual operand.  Register
        indirect addressing requires only one memory access.
     
        An indirect address may be indicated in {assembly language} by
        an operand in parentheses, e.g. in {Motorola 68000} assembly
     
        	MOV D0,(A0)
     
        writes the contents of register D0 to the location pointed to
        by the address in register A0.
     
        Indirect addressing is often combined with pre- or post-
        increment or decrement addressing, allowing the address of the
        operand to be increased or decreased by one (or some specified
        number) either before or after using it.
     
        (1994-11-07)