1. An instrument in a vehicle that measures and displays the total distance traveled in miles.
Usage: Also called odometer in U.S. English; mileometer is more common in British English.

Examples

• The mileometer on my car showed that I had driven over 50,000 miles.
• She checked the mileometer before the road trip to record the starting distance.
• The mechanic reset the mileometer after replacing the instrument cluster.
• According to the mileometer, the vehicle has traveled 120,000 miles since it was new.
• The rental company uses the mileometer to calculate charges based on distance driven.