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grade separation

 - 2 dictionary results

grade separation

–noun
separation of the levels at which roads, railroads, paths, etc., cross one another in order to prevent conflicting rows of traffic or the possibility of accidents.

Origin:
1930–35, Americanism
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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grade separation

noun
a crossing that uses an underpass or overpass 
WordNet® 3.0, © 2006 by Princeton University.
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