a unit of measurement, consisting of one mile traveled by a passenger, that airlines, railroads, and other public transportation facilities use in recording volume of traffic.
Origin of passenger mile
First recorded in 1900–05
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for passenger mile
Historical Examples of passenger mile
The passenger-mile—representing the progress of one train over one mile of track—is the unit of that form of traffic.
A passenger-mile, as we know already, is one of the units in estimating the traffic revenue of a railroad.