- a unit of freight transportation measurement equivalent to a ton of freight transported one mile.
Origin of ton-mile
First recorded in 1900–05
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ton-mile
Similarly the ton-mile is the unit of freight transportation.The Railroad Problem
The longer the haul, the lower the ton-mile cost as a matter of necessity.
Obviously, the ton-mile rate steadily falls within such a group with progressive remoteness.
The movement of average trainloads in connection with ton-mile revenue bears upon this point.