multiprocessing

[muhl-tee-pros-es-ing, -uh-sing or, esp. British, -proh-ses-ing, -suh-sing]
noun Computers.
  1. the simultaneous execution of two or more programs or instruction sequences by separate CPUs under integrated control.

Origin of multiprocessing

First recorded in 1930–35; multi- + process + -ing1
Related formsmul·ti·proc·es·sor, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for multiprocessor

multiprocessor

noun
  1. computing a number of central processing units linked together to enable parallel processing to take place
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for multiprocessor
n.

also multi-processor, 1961, from multi- + processor.

Online Etymology Dictionary, © 2010 Douglas Harper