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

superscalar

    A superscalar architecture is a uniprocessor
   that can execute two or more scalar operations in parallel.
   Some definitions include superpipelined and VLIW
   architectures; others do not.  Superscalar architectures
   (apart from superpipelined architectures) require multiple
   functional units, which may or may not be identical to each
   other.  In some superscalar processors the order of
   instruction execution is determined statically (purely at
   compile-time), in others it is determined dynamically (partly
   at run time).