millennium bug
Informal.
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.
Words nearby millennium bug
millennial, millennial church, millennialism, millennium, millennium bridge, millennium bug, millepede, millepore, miller, miller index, miller's disease
Origin of millennium bug
1990–95
Also called Y2K problem, Y2K bug.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for millennium bug
millennium bug
noun
computing any software problem arising from the change in date at the start of the 21st century
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