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

She moves through the rooms where its future is discussed, from Silicon Valley boardrooms to Downing Street, Davos and the Vatican.

From BBC ● Oct. 9, 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

The project took Silicon Valley by storm in the early 2010s, as young entrepreneur Holmes drew investors -- including Henry Kissinger, Carlos Slim and Rupert Murdoch -- to her project.

From Barron's ● Oct. 9, 2026

The moves rattled Silicon Valley executives and California educators who see easy access to the smartest, hardest-working people in the world as one of America’s greatest competitive advantages.

From Los Angeles Times ● Oct. 8, 2026

Before Silicon Valley was Silicon Valley, it was one big farm, the Valley of the Heart’s Delight.

From "A Deadly Wandering: A Mystery, a Landmark Investigation, and the Astonishing Science of Attention in the Digital Age" by Matt Richtel