Grid Computing
Applying the resources of many computers in a network to a single problem at the same time �¢?? usually a scientific or technical problem that requires a great number of computer processing cycles or access to large amounts of data. Grid computing uses software to divide and farm out pieces of a program to as many as several thousand computers. A number of corporations, professional groups and university consortia have developed frameworks and software for managing grid computing projects.
From : www.bl.uk/about/strategic/glossary.html