grouped raten. now rare (with reference to a rail fare or rail fares) = group raten. at groupn. Compounds 2.
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1881 Manch. Weekly Times 30 July 7/4 The railway company unduly prejudiced the Denaby Company by the system of grouped rates charged to the collieries in the South Yorkshire coal field.
1905 J. L. CowlesGen. Freight & Passenger Post p. xvi This grouped rate covered a zone of 220 miles.