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Petrichor: The smell after rainfall


[soo-per-hahy-wey, soo-per-hahy-wey] /ˈsu pərˌhaɪ weɪ, ˌsu pərˈhaɪˌweɪ/
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.
Compare expressway.
any very fast route or course.
Origin of superhighway
1925-30; super- + highway Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for superhighway
Historical Examples
  • As they slid along the superhighway toward the first and largest of the Venusian cities, Astro pointed out the sights.

    The Revolt on Venus Carey Rockwell
  • A few moments later Strong was speeding along the superhighway back toward the city.

    The Space Pioneers Carey Rockwell
British Dictionary definitions for superhighway


(mainly US) a fast dual-carriageway road
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for superhighway

1925, from super- + highway.

Online Etymology Dictionary, © 2010 Douglas Harper
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superhighway in Technology
The Free On-line Dictionary of Computing, © Denis Howe 2010
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