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millennium bug

Informal.
1.
a bug that can cause computers or software to misinterpret the first two digits of the year 2000 as 19, due to the coding of dates using only the last two digits of the year.
Also called Y2K problem, Y2K bug.
Origin
1990-95

Y2K

[wahy-too-key] /ˈwaɪˌtuˈkeɪ/
noun
1.
the year 2000.
2.
Also called Y2K problem, Y2K bug. millennium bug.
Origin
1995-2000; Y(ear) + 2 + K symbol for the number 1000
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for y2k bug

millennium bug

noun
1.
(computing) any software problem arising from the change in date at the start of the 21st century

Y2K

noun (informal)
1.
another name for the year 2000 ad (esp referring to the millennium bug)
Word Origin
C20: y(ear) + 2 + k (in the sense: thousand)
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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Related Abbreviations for y2k bug

Y2K

(the year) 2000
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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