WordReference Random House Unabridged Dictionary of American English © 2026
rail′ rap′id tran′sit,
- Rail Transporta system of rail transit within an urban area that has exclusive right of way either below, above, or on the ground and so is capable of relatively high operating speed. Abbr.: RRT Cf. elevated railroad, subway.
'rail rapid transit' also found in these entries (note: many are not synonyms or translations):