Collins
World English Dictionary
information technology
 
n
IT the technology of the production, storage, and communication of information using computers and microelectronics

Collins English Dictionary - Complete & Unabridged 10th Edition
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Dictionary.com's 21st Century Lexicon
Main Entry:  information technology
Part of Speech:  n
Definition:  See infotech
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American Heritage
Science Dictionary
information technology  
The technology involved with the transmission and storage of information, especially the development, installation, implementation, and management of computer systems within companies, universities, and other organizations.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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FOLDOC
Computing Dictionary

information technology definition

business, jargon
(IT) Applied computer systems - both hardware and software, and often including networking and telecommunications, usually in the context of a business or other enterprise. Often the name of the part of an enterprise that deals with all things electronic.
The term "computer science" is usually reserved for the more theoretical, academic aspects of computing, while the vaguer terms "information systems" (IS) or "information services" may include more of the human activities and non-computerised business processes like knowledge management. Others say that IT includes computer science.
(2000-10-02)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Example sentences
And it is nearly certain that few of them-and few industries based on them-will
  come out of computer and information technology.
Well, my background was always in information technology.
New advances in information technology have made such collaboration much easier
  and more common.
He worries that the next breakthroughs in energy, transport and information
  technology will occur elsewhere.
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