Definitions from Wiktionary (Silicon Valley)

▸ noun:  (informal) 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.
▸ noun:  (metonymically) The tech industry, especially the American tech industry specifically.
▸ noun:  (countable) A tech industry cluster in another country, developed as a competitor to the original Silicon Valley.
▸ Also see silicon_valley


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