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superhighway

[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.
Compare expressway.
2.
any very fast route or course.
Origin
1925-1930
1925-30; super- + highway
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for super highway

superhighway

/ˈsuːpəˌhaɪweɪ/
noun
1.
(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 super highway

superhighway

n.

1925, from super- + highway.

Online Etymology Dictionary, © 2010 Douglas Harper
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