[pros-es-er or, esp. British, proh-ses-]
a person or thing that processes.
controller ( def 5 ).
Also, processer.

1905–10; process + -or2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
processor (ˈprəʊsɛsə)
1.  computing another name for central processing unit
2.  a person or thing that carries out a process

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Science Dictionary
processor   (prŏs'ěs'ər, prō'sěs'-)  Pronunciation Key 
  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 © 2002. Published by Houghton Mifflin. All rights reserved.
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Computing Dictionary

processor definition

central processing unit

The Free On-line Dictionary of Computing, © Denis Howe 2010
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Example sentences
Blend all pesto ingredients in a food processor or blender until smooth.
If the nature of the universe is indeed digital then what the speed of light
  defines for us is the processor speed.
Place the steamed vegetables in the work bowl of your food processor or blender.
When the stored energy of the battery dropped below a certain threshold, the
  processor would ignite combustion of one pellet.
Image for processor
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