Use·net or USE·NET (yo?oz?n?t?)n. A messaging system that uses a computer network, especially the internet, to transfer or archive posts organized in thematic groups.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.Usenet (?ju?z?n?t) n (Computer Science) computing a vast collection of newsgroups that follow agreed naming, maintaining, and distribution practicesCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014Use?net or USENET (?yuz?n?t, ?yus-) n. Computers. an extensive system of newsgroups: a branch of the Internet. [1980?85; use(rs’) + net (work)] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.