superhighway

American  

[soo-per-hahy-wey, soo-per-hahy-wey] / ˈsu pərˌhaɪ weɪ, ˌsu pərˈhaɪˌweɪ /

noun

1. a highway designed for travel at high speeds, having more than one lane for each direction of traffic, a safety strip dividing the two directions, and cloverleaves to route the traffic on and off the highway.

2. any very fast route or course.

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superhighway British  

/ ˈsuːpəˌhaɪweɪ /

noun

1. a fast dual-carriageway road

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Etymology

Origin of superhighway

First recorded in 1925–30; super- + highway

Example Sentences

The dot-com boom in the 1990s has some similarities because it spurred a wave of companies to go public, helping finance a massive investment in infrastructure, the so-called information superhighway.

From The Wall Street Journal • Jun. 5, 2026

It's the body's superhighway that carries information from your brain to your major organs.

From BBC • Nov. 8, 2025

"Imagine a superhighway just for electrons," Liu explained.

From Science Daily • Oct. 31, 2025

The libertarian intellects of Web 1.0 lost their place to cringe culture; subsequently, zoomers crowded out millennials on the information superhighway.

From Slate • Aug. 27, 2024

The road we have long been traveling is deceptively easy, a smooth superhighway on which we progress with great speed, but at its end lies disaster.

From "Silent Spring" by Rachel Carson

Related Words

• artery
• expressway
• freeway
• pathway
• roadway
• subway
• thoroughfare
• turnpike
• viaduct