Silicon Valley

noun2

1. •
   Originally, the region of the San Francisco Bay Area in which there were a high number of industries producing silicon chips; later extended to mean the entire concentration of high-tech businesses in this area.

   • The community of radio amateurs—trespassing fiddlers on the cutting edge of technological possibilities—prefigured the geek community that was to inhabit Silicon Valley 50 years later. — 2012
2. •
   A tech industry cluster in another country, developed as a competitor to the original Silicon Valley.

   • The belief in the early 1980s among many European pundits that a series of European Silicon Valleys could be developed before the end of the decade flew in the face of all the United States evidence. — 1995