The Free On-line Dictionary of Computing (30 December 2018):

superpipelined

   1. Traditional pipelined architectures have a single
   pipeline stage for each of: instruction fetch, instruction
   decode, memory read, ALU operation and memory write.  A
   superpipelined processor has a pipeline where each of
   these logical steps may be subdivided into multiple pipeline
   stages.

   2. Marketese for pipelined.