Definition of "hyperthreading"

hyperthreading

noun
uncountable
1. (computing) A form of microprocessor parallelization where each physical processor is treated as two virtual processors.
  Quotations
  The scope of hyperthreading instructions is not covered in this book.
  2005, James Leiterman, 32/64-Bit 80x86 Assembly Language Architecture, page 457
  There are some cases where hyperthreading actually degrades CPU performance, especially when CPU utilization is high.
  2010, Mike Laverick, VMware VSphere 4 Implementation, page 307