MILEAGE
mileage, milage
(noun) distance measured in miles
mileage
(noun) a travel allowance at a given rate per mile traveled
mileage, fuel consumption rate, gasoline mileage, gas mileage
(noun) the ratio of the number of miles traveled to the number of gallons of gasoline burned
Source: WordNet® 3.1
Etymology
Noun
mileage (countable and uncountable, plural mileages)
The total distance travelled in miles or in air miles.
The number of miles travelled by a vehicle on a certain volume of fuel.
An allowance for travel expenses at a specified rate per mile.
(informal) The amount of service that something has yielded or may yield in future.
(informal) Something worth taking into consideration.
Source: Wiktionary
Mile"age (; 48), n.
1. An allowance for traveling expenses at a certain rate per mile.
2. Aggregate length or distance in miles; esp., the sum of lengths of
tracks or wires of a railroad company, telegraph company, etc.
[Written also milage.] Constructive mileage, a mileage allowed for
journeys supposed to be made, but not actually made. Bartlett.
Source: Webster’s Unabridged Dictionary 1913 Edition