[mahy-kroh-pros-es-er, ‐uh-ser; especially British ‐proh-ses-er, ‐suh-ser]


an integrated computer circuit that performs all the functions of a CPU.

Origin of microprocessor

First recorded in 1965–70; micro- + processor
Related formsmi·cro·proc·es·sing, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for microprocessor

circuitry, chip, microchip, IC, microcircuit, microelectronics, transputer

Examples from the Web for microprocessor

Contemporary Examples of microprocessor

Historical Examples of microprocessor

  • The capabilities of the integrated circuit (IC), and in particular the microprocessor, continue to increase unabated.

    Shock and Awe

    Harlan K. Ullman

British Dictionary definitions for microprocessor



computing a single integrated circuit performing the basic functions of the central processing unit in a small computer
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 microprocessor

1970, from micro- + processor.

Online Etymology Dictionary, © 2010 Douglas Harper

microprocessor in Science



An integrated circuit that contains a processor, such as a central processing unit.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.