Definition

A device that shows how fast a vehicle is moving, usually measured in miles per hour or kilometers per hour.

Example

The speedometer in my car shows that I am driving at 60 miles per hour.

Conversation

Have you checked your speedometer lately?

No, I haven't looked at it in a while. Why?

I think my car's speedometer is acting up again.

Maybe you should get it checked; it could be important.

Synonyms & Antonyms

Root Explanation

Speedometer → It is formed from "speed" (from Old English *spēd*, meaning rapidity or swiftness) and "-ometer" (from Greek *metron*, meaning measure). The word "speedometer" refers to a device that measures the speed of a vehicle.

Memory Tip

Think of 'speed' as how fast something is going, and '-ometer' as a tool for measuring. This helps you remember that a speedometer measures how fast a vehicle is moving.

Visually Confused Words