Respuesta :

The word part that means "pertaining to" is "ac". This word part is derived from Latin and is commonly used in medical and scientific terminology to denote a relationship or connection between two things.

Some examples of words that use the "ac" word part include:

* Cardiac - pertaining to the heart
* Renal - pertaining to the kidneys
* Orbital - pertaining to the orbit (of the eye)
* Orbital - pertaining to the orbit (of the eye)
* Neural - pertaining to the nerves
* Acute - having a severe or sharp onset (as in an illness)

As you can see, the "ac" word part is commonly used in medical terminology to describe the relationship between various body parts or systems, as well as to describe the characteristics of certain conditions or diseases. It's a useful word part to know when studying medical or scientific terminology.