Definition

Relating to or capable of speeds that are five times faster than the speed of sound.

Example

The hypersonic missile can travel at speeds that exceed five times the speed of sound.

Conversation

Did you hear about the new hypersonic jet they're testing?

Yeah, I read that it can travel five times faster than sound!

Imagine flying that fast; it would change air travel completely.

Totally! I can't wait to see how it performs in real conditions.

Synonyms & Antonyms

Root Explanation

Hypersonic → It is formed from "hyper-" (meaning over or beyond) and "sonic" (from Latin "sonicus", meaning related to sound). The word "hypersonic" refers to speeds that are beyond the speed of sound.

Memory Tip

Think of 'hyper-' meaning 'beyond' and 'sonic' relating to 'sound' — so hypersonic describes something that moves faster than sound.

Visually Confused Words