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[ek-struh-net] /ˈɛk strəˌnɛt/
an intranet that is partially accessible to authorized persons outside of a company or organization.
Origin of extranet
1995-2000 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for extranet


(computing) an intranet that is modified to allow outsiders access to it, esp one belonging to a business that allows access to customers
Word Origin
C20: from extra- + net1 (sense 8), modelled on intranet
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
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extranet in Science
An extension of an institution's intranet, enabling communication between the institution and people it deals with, often by providing limited access to its intranet.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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extranet in Technology

World-Wide Web
The extension of a company's intranet out onto the Internet, e.g. to allow selected customers, suppliers and mobile workers to access the company's private data and applications via the World-Wide Web. This is in contrast to, and usually in addition to, the company's public website which is accessible to everyone. The difference can be somewhat blurred but generally an extranet implies real-time access through a firewall of some kind.
Such facilities require very careful attention to security but are becoming an increasingly important means of delivering services and communicating efficiently.
[Did Marc Andreessen invent the term in September 1996?]

The Free On-line Dictionary of Computing, © Denis Howe 2010
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