What is the root meaning of audio?

The root meaning of "audio" comes from the Latin word "audire", which means "to hear".

This is why "audio" is used in words related to sound, such as:

* Audiophile: A lover of high-quality sound.

* Audiovisual: Relating to both sound and visual images.

* Audiobook: A book recorded for listening.

* Audiology: The study of hearing.