Definitions for "Y2K"
Stands for the year 2000. Because of the way some computer programs were written, some people thought that computers all over the world would turn their clocks back to the year 0 or 1900 when we started the year 2000. Some people even thought this would cause mass chaos all over the world. People worked on making computers "Y2K compliant" so it didn't happen.
An abbreviation for the Year 2000, identified by many technologically savvy individuals as the point when many critical computer systems will experience operational problems. The extent of these problems is a subject of heated debate within the computer industry.
Year 2000. The Y2K bug was one of the biggest hoaxes in history. The actual effect of this supposed problem was microscopic compared to what the analysts predicted.