Definition

Relating to speeds that are close to the speed of sound, typically just below it, where airflow changes from slower to faster around an object.

Example

The aircraft was designed to operate efficiently in transonic conditions.

Conversation

Did you hear about the new plane that can fly at transonic speeds?

Yeah, it's impressive how close it gets to the speed of sound!

I wonder how they manage to control airflow at those transonic levels.

It must involve some advanced technology to handle the changes.

Synonyms & Antonyms

Root Explanation

Transonic → It is formed from "trans-" (meaning across) and "sonic" (from Latin "sonus", meaning sound). The word "transonic" refers to speeds that are across or near the speed of sound.

Memory Tip

Think of something moving 'across' ('trans-') the 'sound' ('sonus') barrier — that's what transonic means.

Visually Confused Words