[pros-es-er or, esp. British, proh-ses-]
  1. a person or thing that processes.
  2. Computers.
    1. a controller, the key component of a computing device that contains the circuitry necessary to interpret and execute electrical signals fed into the device.
    2. a computer.
  3. food processor.
Sometimes proc·ess·er.

Origin of processor

First recorded in 1905–10; process + -or2 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for processers


  1. computing another name for central processing unit
  2. a person or thing that carries out a process
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 processers



1909, agent noun in Latin form from process (v.). Data processor is from 1957; word processor is from 1973; food processor in the kitchen appliance sense also is from 1973.

Online Etymology Dictionary, © 2010 Douglas Harper

processers in Science


[prŏsĕs′ər, prōsĕs′-]
  1. A part of a computer, such as the central processing unit, that performs calculations or other manipulations of data.
  2. A program that translates another program into a form acceptable by the computer being used.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.