Silicon Valley

American  

noun

1. the area in northern California, southwest of San Francisco in the Santa Clara valley region, where many of the high-technology design and manufacturing companies in the semiconductor industry are concentrated.

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Silicon Valley British  

noun

1. an industrial strip in W California, extending S of San Francisco, in which the US information technology industry is concentrated

2. any area in which industries associated with information technology are concentrated

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Silicon Valley Cultural  

1. A region on the San Francisco Peninsula in California where the miniaturized electronics industry is centered, so called because most of the devices built there are made of semiconductors such as silicon.

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The term is often used as a catchword to describe the development of high-tech industry (see also high-tech): “If we can attract this corporation to our town, we could become another Silicon Valley.”

Etymology

Origin of Silicon Valley

So called from the silicon wafers employed in semiconductor devices

Example Sentences

See Examples For:

Silicon Valley

Our reporters examine how the hunt for AI firepower is reshaping Silicon Valley.

From The Wall Street Journal ● Oct. 10, 2026

Finally, Silicon Valley really, really wants A.I. in schools.

From Slate ● Oct. 10, 2026

The private life of disgraced Silicon Valley startup founder Elizabeth Holmes will soon be aired to the public in a startling new documentary filmed in the 34 days before she went to prison.

From Barron's ● Oct. 9, 2026

But its strangeness also seems appropriate, considering the epic oddity of the South African’s ascension from mistrusted Silicon Valley wannabe to ever-confident cheerleader for space dreams and electric vehicles.

From Los Angeles Times ● Oct. 9, 2026

South of that were little beach towns, and then Silicon Valley and Stanford.

From "We Are Okay" by Nina LaCour