Definition

Relating to sound waves that have a frequency higher than what humans can hear, typically above 20,000 hertz.

Example

Ultrasonic cleaning is often used to clean delicate items without damaging them.

Conversation

Have you heard about those ultrasonic pest repellents?

Yeah, I read that they can drive away bugs without chemicals.

Exactly! It's fascinating how they use sound to keep them away.

I might try one out, especially since I'm tired of using sprays.

Synonyms & Antonyms

Root Explanation

Ultrasonic → It is formed from "ultra-" (meaning beyond) and "sonic" (from Latin "sonus", meaning sound). The word "ultrasonic" refers to sound waves that are beyond the range of human hearing, specifically those above 20 kHz.

Memory Tip

Think of 'beyond' ('ultra-') normal 'sound' ('sonic') to remember that 'ultrasonic' refers to sound that is beyond what we can hear.

Visually Confused Words