su·per·high·way

[soo-per-hahy-wey, soo-per-hahy-wey]
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:
1925–30; super- + highway

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
superhighway (ˈsuːpəˌhaɪweɪ) [Click for IPA pronunciation guide]
 
n
chiefly (US) a fast dual-carriageway road

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Superhighway is always a great word to know.
So is ort. Does it mean:
a scrap or morsel of food left at a meal.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
Etymonline
Word Origin & History

superhighway
1925, from super- + highway.
Online Etymology Dictionary, © 2010 Douglas Harper
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FOLDOC
Computing Dictionary

superhighway definition


information superhighway

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Encyclopedia Britannica
Encyclopedia

superhighway

major arterial divided highway that features two or more traffic lanes in each direction, with opposing traffic separated by a median strip; elimination of grade crossings; controlled entries and exits; and advanced designs eliminating steep grades, sharp curves, and other hazards and inconveniences to driving. Frequently expressways have been constructed over completely new routes, passing near but not through large centres of population, on more or less direct lines between desired termini. Their advantages include high speed, greater safety, comfort and convenience for drivers and passengers, and lower vehicle operating costs. Many of these new express highways, especially in the United States, are toll roads, but that is an incidental, not an essential, feature.

Learn more about superhighway with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Down a bit on the information superhighway, the road ends.
Location, value, convenience--the retail superhighway has got all that.
Although the atmosphere may not be a great storehouse of water, it is the
  superhighway used to move water around the globe.
He doesn't see these boxes as part of the unitized superhighway of the
  networked economy.
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