Definition

A system that uses sound waves to find and locate objects underwater or to measure distances in water.

Example

The submarine used sonar to detect enemy ships beneath the surface.

Conversation

Have you ever tried using a sonar device when fishing?

No, I haven't, but I've heard it helps find the best spots.

Yeah, it sends out sound waves to locate fish under the water.

That sounds really cool! I might need to get one for my next trip.

Synonyms & Antonyms

Root Explanation

**Sonar** → The word 'sonar' is formed from 'son' (from Latin *sonus*, meaning sound) and the suffix '-ar' (used to form nouns indicating a system or device). Thus, 'sonar' refers to a system or device that uses sound waves to detect objects underwater.

Memory Tip

Think of 'sound' ('son') being used in a special 'system' ('-ar') to find things underwater — that's what sonar does.

Visually Confused Words