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The final stage in the testing of a new software or hardware product before its commercial release, conducted by testers other than its developers.
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.
(Computer Science) a test of a new or modified piece of computer software by customers who volunteer to do so
(Computer Science) to test (software) in this way. Compare alpha-test
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Past participle: beta-tested
Collins English Verb Tables © HarperCollins Publishers 2011